Download 3.9.1 (7MB) v3.9.1 MK3S (September 21, 2020) Major improvements to LA15

Support for parts from selected vendors

Ambient temperature check

PC Blend preheat added

Stack corruption fixed

More precise Belt test

Octoprint causing M112 fixed

Download 3.9.1 (7MB) v3.9.1 MK3 (September 21, 2020) Major improvements to LA15

Support for parts from selected vendors

Ambient temperature check

PC Blend preheat added

Stack corruption fixed

More precise Belt test

Octoprint causing M112 fixed

Download 3.9.1 (9MB) v3.9.1 MK2.5S (September 21, 2020) Major improvements to LA15

Support for parts from selected vendors

PC Blend preheat added

Stack corruption fixed

Octoprint causing M112 fixed

Download 3.9.1 (9MB) v3.9.1 MK2.5 (September 21, 2020) Major improvements to LA15

Support for parts from selected vendors

PC Blend preheat added

Stack corruption fixed

Octoprint causing M112 fixed

Download 3.9.1 (1.0.6) (10MB) v3.9.1 (1.0.6) MK3S/MK2.5S Multi Material 2S (September 21, 2020) Printer firmware update (3.9.1) Major improvements to LA15

Support for parts from selected vendors

Ambient temperature check (MK3S)

PC Blend preheat added

Stack corruption fixed

More precise Belt test (MK3S)

Octoprint causing M112 fixed MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.9.1 (1.0.6) (11MB) v3.9.1 (1.0.6) MK3/MK2.5 Multi Material 2.0 (September 21, 2020) Printer firmware update (3.9.1) Major improvements to LA15

Support for parts from selected vendors

Ambient temperature check (MK3)

PC Blend preheat added

Stack corruption fixed

More precise Belt test (MK3)

Octoprint causing M112 fixed MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 1.4.2 (150MB) v1.4.2 SL1 (September 18, 2020) UV calibration algorithm updated

Fixed cover check after resin refill

Download 4.2.1 (1MB) v4.2.1 MINI (August 31, 2020) Random BSOD bug fixed

Download 3.0.0 (1MB) v3.0.0 CW1 (August 28, 2020) Code refactoring and optimizations

Firmware localized into 7 languages

Resin preheat

Extended curing time

Factory self-test

Download 1.4.1 (143MB) v1.4.1 SL1 (August 6, 2020) Fixed missing timezones

Fixed UV calibrator disconnection

Fixed data corruption on USB

Fixed resin volume warning

Fixed preprint warning delay

Fixed "printer is not calibrated" message during calibration

Improved system logs

Other bug fixes

Download 4.2.0 (1MB) v4.2.0 MINI (August 5, 2020) Firmware localized into 7 languages (English, French, Italian, German, Spanish, Czech, Polish)

(English, French, Italian, German, Spanish, Czech, Polish) New sound volume option

Pause print from USB (M601) fixed

Printer beeping in silent mode fixed

Download 4.1.0 (1MB) v4.1.0 MINI (July 8, 2020) Automatic print pause after an accidental USB drive removal. Resume print option is available after the USB drive is re-inserted.

Printer acoustic signalization - you can choose the level in Settings -> Sound mode

Support for NTP servers for getting the current time (internet connection required)

Filament load/unload procedure adjusted

Preheat function improved

Tune menu extended with "LAN settings", "Version info" and "Sound mode" submenus

File browser improved

Horizontal scrolling text function added

Octoprint screen further improved

Faster print head heat-up process

Fixed bugs and minor improvements (see the full changelog)

Download 1.4.0 (150MB) v1.4.0 SL1 (June 5, 2020) To install this version you have to update from 1.3.0 or newer. User UV calibration (calibration guide)

Parallel pre-print checks

Manual check for firmware updates

Simplified fan checks

Upload notifications redesigned

Fixed bugs

Download 3.9.0 (1.0.6) (10MB) v3.9.0 (1.0.6) MK3S/MK2.5S Multi Material 2S (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Printer firmware update (3.9.0) Linear Advance 1.5

Automatic E-jerk conversion

Screen brightness adjustment (MK3S)

Filament sensor recognition (MK3S)

New G-code files sorting

Toggle and Translations (MK3S)

MMU2S selector blade activated

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP value lowered (MK3S)

MINTEMP error differentiated

Flickering “Statistics” screen fixed

Tone timer re-enabled

Nozzle crash protection improved (MK3S)

MMU runout for unknown filament fixed

Belt test improvements

Decoupling XYZ relative and E relative MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.9.0 (1.0.6) (10MB) v3.9.0 (1.0.6) MK3/MK2.5 Multi Material 2.0 (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Printer firmware update (3.9.0) Linear Advance 1.5

Automatic E-jerk conversion

Screen brightness adjustment (MK3)

New G-code files sorting

Toggle and Translations (MK3)

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP value lowered (MK3)

MINTEMP error differentiated

Laser filament sensor sensitivity fix (MK3)

Flickering “Statistics” screen fixed

Tone timer re-enabled

Nozzle crash protection improved (MK3)

MMU runout for unknown filament fixed

Belt test improvements

Decoupling XYZ relative and E relative MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.9.0 (7MB) v3.9.0 MK3 (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Linear Advance 1.5

Automatic E-jerk conversion

Laser filament sensor sensitivity fix

Screen brightness adjustment

New G-code files sorting

Toggle and Translations

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP value lowered

MINTEMP error differentiated

Flickering “Statistics” screen fixed

Tone timer re-enabled

Nozzle crash protection improved

Belt test improvements

Decoupling XYZ relative and E relative

Download 3.9.0 (7MB) v3.9.0 MK3S (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Linear Advance 1.5

Automatic E-jerk conversion

Screen brightness adjustment

Filament sensor recognition

New G-code files sorting

Toggle and Translations

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP value lowered

MINTEMP error differentiated

Flickering “Statistics” screen fixed

Tone timer re-enabled

Nozzle crash protection improved

Belt test improvements

Decoupling XYZ relative and E relative

Download 3.9.0 (9MB) v3.9.0 MK2.5S (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Linear Advance 1.5

Automatic E-jerk conversion

New G-code files sorting

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP error differentiated

Flickering “Statistics” screen fixed

Tone timer re-enabled

Belt test improvements

Decoupling XYZ relative and E relative

Download 3.9.0 (9MB) v3.9.0 MK2.5 (May 19, 2020) This is a major release, please, update! Stats: 409 commits, 108 pull requests, 66 closed issues, cooperation with 14 developers Linear Advance 1.5

Automatic E-jerk conversion

New G-code files sorting

Show current Z offset in reset dialog before first layer calibration

Unknown Z coordinate displayed

Safer moves in Z-axis, if the position is unknown

Heating disabled during MBL

MINTEMP error differentiated

Flickering “Statistics” screen fixed

Tone timer re-enabled

Belt test improvements

Decoupling XYZ relative and E relative

Download 4.0.5 (1MB) v4.0.5 MINI (April 6, 2020) Prusa Connect Local (WebUI)

Stop print function fixed

The printer is now locked (except Tune menu) during Remote print via OctoPrint (safety reasons)

Adjustment to Mesh Bed Levelling

The new color scheme for active button

Improved movement near the axis end

Revised file sorting

Adjustments to e-steps

Improved Z-axis self-test

Random screen freezing fixed

New EEPROM implementation

Download 4.0.4 (1MB) v4.0.4 MINI (March 4, 2020) Jerk speeds fixed Contains all features and fixes introduced in the previous release, such as: Support for an MK3S encoder

Mesh Bed Levelling fixed

Fixed loaded filament information

Automatic filament sensor detection

Improved filament changes (M600)

Download 1.3.3 (150MB) v1.3.3 SL1 (March 4, 2020) Fixed UI crash

Download 1.3.2 (158MB) v1.3.2 SL1 (February 25, 2020) New web interface

Software licenses updated

Fixed bugs

Download 4.0.2 (1MB) v4.0.2 MINI (February 4, 2020) Minor update: Support for an MK3S LCD encoder

Download 1.3.0 (158MB) v1.3.0 SL1 (January 16, 2020) New network management

New update system (OTA)

Localized user interface

User resin calibration (check out the guide and video)

Improved graphics in Wizard/Calibration

Printer not calibrated warning at startup

Phantom click resistant UI

Fixed bugs

Download 4.0.1 (1MB) v4.0.1 MINI (December 20, 2019) Improved homing algorithm

Improved dialogue for color change (M600)

Improved Wizard stability

Filament sensor ON/OFF setting kept after a reset

Download 4.0.0 (1MB) v4.0.0 MINI (December 10, 2019) Initial release

Download 3.8.1 (7MB) v3.8.1 MK3S (October 24, 2019) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes

Download 3.8.1 (7MB) v3.8.1 MK3 (October 24, 2019) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes

Download 3.8.1 (9MB) v3.8.1 MK2.5S (October 24, 2019) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

Fixed bug with the incorrect mode displayed on MK2.5/S after reset

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes

Download 3.8.1 (9MB) v3.8.1 MK2.5 (October 24, 2019) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

Fixed bug with the incorrect mode displayed on MK2.5/S after reset

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes

Download 3.8.1 (1.0.6) (10MB) v3.8.1 (1.0.6) MK3S/MK2.5S Multi Material 2S (October 24, 2019) Printer firmware update (3.8.1) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

Fixed bug with the incorrect mode displayed on MK2.5/S after reset

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.8.1 (1.0.6) (11MB) v3.8.1 (1.0.6) MK3/MK2.5 Multi Material 2.0 (October 24, 2019) Printer firmware update (3.8.1) First layer calibration using multiple filament types (PLA, PET, ASA, ABS, HIPS, PP, FLEX)

Repeated First layer calibration settings added

Fan error on Octoprint bug fixed

Fixed bug with the incorrect mode displayed on MK2.5/S after reset

New Live Adjust Z shortcut (Long press of the rotation knob - available only between 0-2 mm of print height)

Move Z shortcut adjustment - not possible during the print)

Translations corrections

Other bug fixes MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 1.2.3 (142MB) v1.2.3 SL1 (October 3, 2019) Note: The firmware downgrade is not supported for this version

Fixed tilt jerk in calibration

Fixed rehoming tilt when printing

Download 1.2.2 (142MB) v1.2.2 SL1 (September 27, 2019) Note: The firmware downgrade is not supported for this version

Print quality improvements

Vibration elimination while printing

Blower fan fixes

Download 2.1.4 (1MB) v2.1.4 CW1 (September 22, 2019) Fan speed optimization

Download 3.8.0 (7MB) v3.8.0 MK3S (September 7, 2019) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material

Download 3.8.0 (7MB) v3.8.0 MK3 (September 7, 2019) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material

Download 3.8.0 (9MB) v3.8.0 MK2.5S (September 7, 2019) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material

Download 3.8.0 (9MB) v3.8.0 MK2.5 (September 7, 2019) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material

Download 3.8.0 (1.0.6) (11MB) v3.8.0 (1.0.6) MK3S/MK2.5S Multi Material 2S (September 7, 2019) Printer firmware update (3.8.0) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.8.0 (1.0.6) (11MB) v3.8.0 (1.0.6) MK3/MK2.5 Multi Material 2.0 (September 7, 2019) Printer firmware update (3.8.0) Steel sheet profiles (more info about settings)

Nozzle diameter setup

Preliminary checks

Firmware onscreen notification

Revised sound warnings

Heatbed noise at 110 V (60 Hz)

Crash detection fixes

Addition of the ASA material MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 1.2.1 (142MB) v1.2.1 SL1 (September 5, 2019) This is a bugfix release. Fixed UV LED exposure timing

Auto adjust tower profiles for reliable homing

Fixed bugs (see the full changelog)

Download 3.7.2 (1.0.6) (10MB) v3.7.2 (1.0.6) MK3S/MK2.5S Multi Material 2S (August 19, 2019) Printer firmware update (3.7.2) Protection against multiple power panics (for MK3)

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen MMU2S Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 3.7.2 (1.0.6) (11MB) v3.7.2 (1.0.6) MK3/MK2.5 Multi Material 2.0 (August 19, 2019) Printer firmware update (3.7.2) Protection against multiple power panics (for MK3)

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen MMU2 Unit firmware update (v1.0.6) Improved stealth mode

Unload speed decreased

Disabled unwanted selector movement

Automatic idler disengagement

Download 1.2.0 (142MB) v1.2.0 SL1 (August 8, 2019) Note: The firmware downgrade is not supported for this version

Multiple languages support

Touch UI improvements

Wizard improvements

Factory defaults protection

Bug fixes

Other changes (complete release log below)

Download 3.7.2 (7MB) v3.7.2 MK3S (June 27, 2019) Protection against multiple power panics

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen

Download 3.7.2 (7MB) v3.7.2 MK3 (June 27, 2019) Protection against multiple power panics

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen

Download 3.7.2 (9MB) v3.7.2 MK2.5S (June 27, 2019) Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen

Download 3.7.2 (9MB) v3.7.2 MK2.5 (June 27, 2019) Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen

Download 3.7.2 (1.0.5) (11MB) v3.7.2 (1.0.5) MK3S/MK2.5S Multi Material 2S (June 27, 2019) Printer firmware update (3.7.2) Protection against multiple power panics (for MK3S)

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.7.2 (1.0.5) (11MB) v3.7.2 (1.0.5) MK3/MK2.5 Multi Material 2.0 (June 27, 2019) Printer firmware update (3.7.2) Protection against multiple power panics (for MK3)

Autonomous fan self-test

Incorrect firmware flashing protection

Min. temp safety trigger

Enforced fan check

Filament runout delay fix

Extruder position after fan error fix

Text format correction on Live adjust Z screen

Display target temperature at PID calibration screen MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 1.1.1 (161MB) v1.1.1 SL1 (June 17, 2019) Note: The firmware downgrade is not supported for this version

Fixed UI updates at print page right after timezone change

Download 1.1.0 (155MB) v1.1.0 SL1 (June 10, 2019) Note: The firmware downgrade is not supported for this version

Fix UV statistics displaying as NA

Test the black display throughput at the end of UV calibration

Fixed the infinite test

Updated photos and texts for calibration

Default tower offset +0.05 mm

Less strict limits in resin sensor check

Improved hard error page

Fixed false-positive change check in advanced settings

UV LED Power Counter & UV LED Time Counter

Prevent user from setting an invalid hostname, restricted to [a-zA-Z0-9-_]

Fixed wrong carry in calculating the end of print time

Download 3.2.3 (1MB) v3.2.3 MK2S MK2/S Multi Material 1.0 MK2 (June 6, 2019) Preheat error improved

Improved temperature regulation

Remaining time estimation

Adjustable beeper notifications

Incomplete file check updated

G-code fixes (M27, M110, M115)

Download 1.0.5 (160MB) v1.0.5 SL1 (May 17, 2019) Note: The firmware downgrade is not supported for this version

Initial version.

Download 2.1.3 (1MB) v2.1.3 CW1 (May 17, 2019) Initial version

Download 3.7.1 (7MB) v3.7.1 MK3S (May 13, 2019) Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix

Download 3.7.1 (7MB) v3.7.1 MK3 (May 13, 2019) Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

IR-sensor self-test fail message added

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix

Download 3.7.1 (8MB) v3.7.1 MK2.5S (May 13, 2019) Watchdog enabled

Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix

Download 3.7.1 (8MB) v3.7.1 MK2.5 (May 13, 2019) Watchdog enabled

Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

IR-sensor self-test fail message added

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix

Download 3.7.1 (1.0.5) (11MB) v3.7.1 (1.0.5) MK3S/MK2.5S Multi Material 2S (May 13, 2019) Printer firmware update (3.7.1) Octoprint MMU load failed fix

Watchdog enabled for MK2.5 and MK2.5S

Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.7.1 (1.0.5) (14MB) v3.7.1 (1.0.5) MK3/MK2.5 Multi Material 2.0 (May 13, 2019) Printer firmware update (3.7.1) Octoprint MMU load failed fix

Watchdog enabled for MK2.5 and MK2.5S

Rambo board overheating fix

Bed preheat error fix

SPI flash error is not blocking the printer anymore

IR-sensor self-test fail message added

Menu items text overflowing fix

Linearity correction not saved to EEPROM fix MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.7.0 (7MB) v3.7.0 MK3 (April 1, 2019) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) The informative message during switching between normal and stealth modes

Improved behaviour when removing SD card

Autoload disabled in extruder info menu

Download 3.7.0 (7MB) v3.7.0 MK3S (April 1, 2019) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) The informative message during switching between normal and stealth modes

Improved behaviour when removing SD card

Autoload disabled in sensor info menu

Download 3.7.0 (9MB) v3.7.0 MK2.5S (April 1, 2019) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) The informative message during switching between normal and silent modes

Improved behaviour when removing SD card

Autoload disabled in sensor info menu

Download 3.7.0 (9MB) v3.7.0 MK2.5 (April 1, 2019) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) The informative message during switching between normal and silent modes

Improved behaviour when removing SD card

Autoload disabled in extruder info menu

Download 3.7.0 (1.0.5) (11MB) v3.7.0 (1.0.5) MK3S/MK2.5S Multi Material 2S (April 1, 2019) Printer firmware update (3.7.0) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) Possibility to switch between normal and stealth mode (MK3S + MMU2S only)

Improved T-code load

Change filament fix

Eject filament contains ramming

The informative message during switching between normal and stealth modes

Improved behaviour when removing SD card

Autoload disabled in sensor info menu

Warning: We do not recommend using Octoprint with this version because of a known bug resulting in failed print after first load filament error. MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.7.0 (1.0.5) (14MB) v3.7.0 (1.0.5) MK3/MK2.5 Multi Material 2.0 (April 1, 2019) Printer firmware update (3.7.0) 7x7 mesh bed levelling (set the density in Settings - Mesh bed leveling - Mesh )

) Improved T-code load

Change filament fix

Eject filament contains ramming

The informative message during switching between normal and stealth modes

Improved behaviour when removing SD card

Autoload disabled in extruder info menu

Warning: We do not recommend using Octoprint with this version because of a known bug resulting in failed print after first load filament error. MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.6.0 (7MB) v3.6.0 MK3 (March 1, 2019) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed

Download 3.6.0 (7MB) v3.6.0 MK3S (March 1, 2019) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed

Download 3.6.0 (9MB) v3.6.0 MK2.5 (March 1, 2019) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed

Download 3.6.0 (9MB) v3.6.0 MK2.5S (March 1, 2019) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed

Download 3.6.0 (1.0.5) (14MB) v3.6.0 (1.0.5) MK3/MK2.5 Multi Material 2.0 (March 1, 2019) Printer firmware update (3.6.0) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed MMU2 Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.6.0 (1.0.5) (11MB) v3.6.0 (1.0.5) MK3S/MK2.5S Multi Material 2S (March 1, 2019) Printer firmware update (3.6.0) Smarter load to nozzle/unload/eject function for multi material printers and single material version improved

Stop print during filament change fixed MMU2S Unit firmware update (v1.0.5) This fw version improves mmu2 unit function when used with MK3S and MK2.5S printers with IR sensor. Especially T-code filament loading phase reliability was improved. It is now possible to resume print after MMU load fail detected by printer also by MMU button.

Download 3.5.2 (1.0.4) (14MB) v3.5.2 (1.0.4) MK3/MK2.5 Multi Material 2.0 (February 20, 2019) Printer firmware update (3.5.2) More quiet print fan operation

Heatbed regulation improved - reduced the PSU clicking noise

Improved heater temperature regulation

Spool join for multi-material prints

Smarter load/unload function

Mintemp updated (MK2.5 only)

SD card menu is shown automatically when the card is inserted

Safer communication between MMU2 and printer

Crash detection for zero target temperature fixed (MK3 only) MMU2 Unit firmware update (v1.0.4) MK2.5 + MMU homing hotfix

Drive error detection improved

Download 3.5.3 (7MB) v3.5.3 MK3S (February 12, 2019) Initial version

Download 3.5.2 (7MB) v3.5.2 MK3 (February 12, 2019) More quiet print fan operation

Heatbed regulation improved - reduced the PSU clicking noise

Improved heater temperature regulation

Spool join for multi-material prints

Smarter load/unload function

SD card menu is shown automatically when the card is inserted

Safer communication between MMU2 and printer

Crash detection for zero target temperature fixed

Download 3.5.2 (9MB) v3.5.2 MK2.5 (February 12, 2019) More quiet print fan operation

Improved heater temperature regulation

Spool join for multi-material prints

Smarter load/unload function

Mintemp for MK2.5 updated

SD card menu is shown automatically when the card is inserted

Safer communication between MMU2 and printer

Download 3.5.1 (7MB) v3.5.1 MK3 (December 19, 2018) Patch release

Button click fix

M220 speed factor

Z-levelling fix

Pause print -> stop print fix

Download 3.5.1 (9MB) v3.5.1 MK2.5 (December 19, 2018) Patch release

Button click fix

M220 speed factor

Pause print -> stop print fix

Download 3.5.1 (1.0.3) (14MB) v3.5.1 (1.0.3) MK3/MK2.5 Multi Material 2.0 (December 19, 2018) Printer firmware update (3.5.1) Patch release

Button click fix

M220 speed factor

Z-levelling fix (MK3 only)

Pause print -> stop print fix MMU2 Unit firmware update (v1.0.3) Power panic support

Smarter operation

Faster Individual Filament Calibration

Download 3.5.0 (1.0.3) (13MB) v3.5.0 (1.0.3) MK3/MK2.5 Multi Material 2.0 (December 18, 2018) MMU2 Unit firmware update (v1.0.3) Power panic support

Smarter operation

Faster Individual Filament Calibration

Download 3.5.0 (7MB) v3.5.0 MK3 (November 22, 2018) Faster filament loading

Pause print improved and Preheat error fix

Min. extrude temp. changed to 175 °C in all variants

Time remaining > 100 h screen fix

Improved Wizard for assembled printers

Filament change (M600): make space for opening idler

Bed power monitor

Standard G-codes for setting TMC currents

Crash detection -> stop print bug fixed

French language added

Other general improvements

Download 3.5.0 (9MB) v3.5.0 MK2.5 (November 22, 2018) Faster filament loading

Pause print and Preheat error improved

Min. extrude temp. changed to 175 °C in all variants

Time remaining > 100 h screen fix

Improved Wizard for assembled printers

Filament change (M600): make space for opening idler

The French language added

Other general improvements

Download 3.5.0 (v1.0.2) (14MB) v3.5.0 (v1.0.2) MK3/MK2.5 Multi Material 2.0 (November 22, 2018) All changes described in v3.0.5 description above

MMU2.0 related improvements:

Improved printing in single material mode (new Tx, Tc codes and T? fixed)



Load to nozzle added



Manage response improved: possibility to preheat nozzle



Fixed First layer calibration/Wizard



Filament sensor (dependency on optical sensor fixed)



T? menu changes feedrate fixed



Extruder stepper disabled during T-code execution (MK3 only)



Auto deplete menu improved



Filament change (M600): improved message synchronization

Download 3.4.2 (V1.0.2) (14MB) v3.4.2 (V1.0.2) MK3/MK2.5 Multi Material 2.0 (October 20, 2018) This firmware version is specifically for users who use MK2.5 + MMU2 setup. If you are not using MMU2 or if you use MMU2 with MK3 printer it is not necessary to upgrade to this version. MK2.5 + MMU2 setup loudness reduced - For corrent beahviour it is necessary to use MMU firmware 1.0.2 and higher when running MMU2 with MK2.5. Users who use MK3 printer do not need to upgrade their MMU2 firmware.

MK2.5 + MMU2 setup initialization - MK2.5 was unable to automatically detect MMU2 unit after turning on the printer. This has been fixed.

Download 3.4.1 (v1.0.1) (7MB) v3.4.1 (v1.0.1) MK3/MK2.5 Multi Material 2.0 (October 12, 2018) New MMU2 board firmware v1.0.1

Pulley size calibration (Follow the guide)



MMU2 factory reset (Follow the guide)

Filament runout detection fixed

Stealth mode bug (indicated as slow Z-axis movements) fixed

Message "Filament sensor response is poor, disable it?" has been temporarily disabled - this feature tended to be too sensitive and unreliable. We are working on improved version of this feature.

Statistics during active print fixed

OctoPrint "Printer reset detected" warning issue fixed

Download 3.4.1 (7MB) v3.4.1 MK3 (October 4, 2018) Filament runout detection fixed

Stealth mode bug (indicated as slow Z-axis movements) fixed

Message "Filament sensor response is poor, disable it?" has been temporarily disabled - this feature tended to be too sensitive and unreliable. We are working on improved version of this feature.

Statistics during active print fixed

OctoPrint "Printer reset detected" warning issue fixed

Download 3.4.1 (7MB) v3.4.1 MK2.5 (October 4, 2018) Filament runout detection fixed

Silent mode bug (indicated as slow Z-axis movements) fixed

Message "Filament sensor response is poor, disable it?" has been temporarily disabled - this feature tended to be too sensitive and unreliable. We are working on improved version of this feature.

Statistics during active print fixed

OctoPrint "Printer reset detected" warning issue fixed

Download 3.4.1 (0.9.0) (7MB) v3.4.1 (0.9.0) MK3/MK2.5 Multi Material 2.0 (October 4, 2018) Filament runout detection fixed

Stealth mode bug (indicated as slow Z-axis movements) fixed

Message "Filament sensor response is poor, disable it?" has been temporarily disabled - this feature tended to be too sensitive and unreliable. We are working on improved version of this feature.

Statistics during active print fixed

OctoPrint "Printer reset detected" warning issue fixed

Download 3.4.0 (6MB) v3.4.0 MK3 (September 12, 2018) Multi Material Upgrade 2.0 support

Filament sensor engine 2.0

Improved power panic

Adjustable beeper notifications

Feedrate and acceleration limits improved

PINDA state shown in menu

Time remaining fix

Download 3.4.0 (6MB) v3.4.0 MK2.5 (September 12, 2018) Multi Material Upgrade 2.0 support

Filament sensor engine 2.0

Adjustable beeper notifications

Time remaining fix

Download 3.4.0 (6MB) v3.4.0 MK3/MK2.5 Multi Material 2.0 (September 12, 2018) Multi Material Upgrade 2.0 support

Filament sensor engine 2.0

Improved power panic

Adjustable beeper notifications

Feedrate and acceleration limits improved

PINDA state shown in menu

Time remaining fix

Download 3.4.0 RC2 v3.4.0 RC2 MK3/MK2.5 Multi Material 2.0 (August 30, 2018) Initial MMU 2.0 release

Download 3.3.1 v3.3.1 MK3 (July 16, 2018) Filament statistics fix

Fixed bug of G28 (auto home) gcode which used to cause undesired execution of mesh bed leveling after temperature calibration and occasional communication timeouts

Load filament improvement (if current Z coordinate is lower than 20 mm when loading filament starts, the printer will increase Z-axis position to ensure, that there will always be enough space for cleaning the nozzle)

Setup function fix

Download 3.3.1 v3.3.1 MK2.5 (July 16, 2018) Filament statistics fix

Fixed bug of G28 (auto home) gcode which used to cause undesired execution of mesh bed leveling after temperature calibration and occasional communication timeouts

Load filament improvement (if current Z coordinate is lower than 20 mm when loading filament starts, the printer will increase Z-axis position to ensure, that there will always be enough space for cleaning the nozzle)

Setup function fix

Download 3.3.0 v3.3.0 MK3 (July 2, 2018) Recurring crash detection limit

Crash detection and filament runout detection improvements and bugfixes (focused on Octoprint and USB printing)

Fixed erroneous movements during stop print

Supports multiple new languages (CZ, IT, DE, PL, ES) - It is necessary to use new Drivers & Apps v2.1.8 or higher to flash firmware with all language variants.

or higher to flash firmware with all language variants. M86 gcode for safety timer

Temperature calibration improvements

Power panic fix

Supports remaining time estimation

Download 3.3.0 v3.3.0 MK2.5 (July 2, 2018) Filament runout detection fixes and improvements (focused on Octoprint and USB printing)

Fixed erroneous movements during stop print

Different language variants (CZ, IT, ES, DE, PL) - English is included in all versions

M86 gcode for safety timer

Temperature calibration improvements

Supports remaining time estimation

Download 3.2.1 v3.2.1 MK3 (May 18, 2018) Patch release (see 3.2.0 changelog for the complete list of new features)

Fixed Wizard and Live adjust Z

XYZ calibration status has been improved

Download 3.2.1 v3.2.1 MK2.5 (May 18, 2018) Patch release (see 3.2.0 changelog for the complete list of new features)

Fixed Wizard and Live adjust Z

XYZ calibration status has been improved

Download 3.2.0 v3.2.0 MK3 (May 10, 2018) Linear advance is back!

New xyz calibration

Filament sensor function improved

Safety timer

Gcodes for setting temperature correction

Extruder linearity correction

Stealth mode for Z axis

Z calibration / mesh bed leveling: stall guard

Temperature calibration improved

Download 3.2.0 v3.2.0 MK2.5 (May 10, 2018) Linear advance is back!

Filament sensor function improved

Safety timer

Gcodes for setting temperature correction

Rambo 1.0 support

Temperature calibration improved

Download 3.1.4 v3.1.4 MK2.5 (April 10, 2018) More reliable and faster XYZ calibration with “image processing”.

Measurement point searching algorithm has been improved to supress “false targets” caused by heating meander near measurement point.

Download 3.1.3 v3.1.3 MK3 (March 8, 2018) More friendly Selftest – sensitivity of axes checks were decreased

Fixed flow setting from LCD menu and flow rate fix – extrusion multiplier was always set to 100%

Download 3.1.2 v3.1.2 MK3 (March 3, 2018) Low layer height (50um and 100um) printing is fixed

Precise homing implemented to remove slight layer shifts when rehoming after PowerPanic or crash. Self test will be re-run automatically to enable this

Improved FAN RPM sensing to reduce number of false alarms

Download 3.1.1 v3.1.1 MK3 (February 5, 2018) Filament sensor is more reliable – higher FPS set and when runout is triggered one additional check is done

Fail stats is split into last print and total menus. Crash detection is also split into X and Y axis

Fan error will not prevent from continuing the print when using OctoPrint

Print fan error or pause during rehoming will perform correctly now

Preheat temperatures updated

Temperature calibration now informs user about the conditions needed

Better serial communication

Download 3.1.0 v3.1.0 MK2S MK2/S Multi Material 1.0 MK2 (November 12, 2017) Linear Advance

Wizard

Host keep alive messages – better OctoPrint compatibility

Sorting files in SD card menu by date or name

Check if file is complete

First layer calibration – V2 integrated into FW

Auto power mode

XYZ calibration details menu improved

PID calibration safety check

M220: Speed factor

Saving E steps per mm to EEPROM fixed

Long filename scrolling is improved

Read more about this major version at prusaprinters.org

There’s a known bug using Repetier server, please wait for the next release if you’re using it

Download 3.1.0 v3.1.0 MK2S MK2/S Multi Material 1.0 MK2 (November 12, 2017) Linear Advance

Wizard

Host keep alive messages

Sorting files in SD card menu

Check if file is complete

First layer calibration

Auto power mode

XYZ calibration details menu fixed

PID calibration safety check

M220: Speed factor

Saving E steps per mm to EEPROM fixed

Improved "Print from SD" menu

Download 3.0.12 v3.0.12 MK2S MK2/S Multi Material 1.0 MK2 MK1 (June 23, 2017) Improved XYZ calibration

XYZ calibration results are now available in Support menu

Selftest fixed

Improved unload filament

Multi Material

When stopping a print, user is asked what filaments to unload

“T?” Gcode added, which selects extruder to use prior to the print

Added support for MK1

Download 3.0.11 v3.0.11 MK2S MK2 (May 19, 2017) Move Z shortcut

Improved pause print

PID calibration menu

PID values for bed saving

Receiving commands via serial improved

Temperature calibration

Improved xyz calibration

Encoder clicks and PT100

Selftest bug fixed

Heatbed preheat error

Corrected German language messages

Download 3.0.10 v3.0.10 MK2S MK2 (February 18, 2017) Loose pulleys test added to self test

Statistics fixed

PID tuning fixed and saving parameters to EEPROM enabled

Stop print function fixed

Load filament function improved

Stack guard added

Xyz calibration updated

Factory reset has new menu

Missing "Move Z" option fixed

Download 3.0.9 v3.0.9 MK2S MK2 (October 21, 2016) Self test now include both nozzle and print cooling fan

More descriptive user messages during the calibration flow

Temperature safety checks are now added in preheat process. This was a bug inherited from original MarlinFW

Download 3.0.8 v3.0.8 MK2S MK2 (September 22, 2016) Reset live adjust on XYZ calibration

Disable timeouts in the XYZ/Z calibration

Don’t modify feed rate multiplier during the XYZ/Z calibration

Support multi screen messages in the XYZ/Z calibration – “move the Z carriages up” step

Support up to three lines in the XYZ/Z calibration messages

Added a new message “Measuring reference height of calibration point xx of 9”

Changed the “move the Z carriages up” message to suggest rotating the knob

Changed the “live adjust not set” message to reference the manual chapter and section

Remove debugging serial line output on Z calibration

Speed up of a path planner by rewriting some of the processing intensive parts from floating point to fixed point arithmetics

Improved accuracy of the diagonal movements by oversampling the line discretisation

Download 3.0.7 v3.0.7 MK2S MK2 (August 22, 2016) Typos fixed

First start flow reorganised

Z_MIN problem fixed

Calibration routine made safer

Stop print routine fix

Download 3.0.6 v3.0.6 MK2S MK2 (August 8, 2016) Menu has been reorganized

Internal improvements of the menu system

Fixed a stack overflow

Improvements of the Live Adjust function (please rerun the First layer calibration)

Fixed the “Stop Print” function

Enabled a high power mode when first booted up on a brand new RAMBo board

Updated Spanish, Italian and Polish texts

Toshiba FlashAir SD card support is now switchable

“Calibrating nth point” message is shown during mesh bed levelling

New feature: Bed leveling adjustment

Improvements to fo fire safety

Improved unload filament function

Z-MIN set back to 0.15mm

Download 3.0.3 v3.0.3 MK2S MK2 (June 12, 2016) G28 won’t run bed levelling when called with X or Y parameters

Factory reset will clear the Live adjust Z settings (helpful for upgraded printers)

Download 3.0.2 v3.0.2 MK2S MK2 (June 6, 2016) Better homing

Homing without calibration

Live adjust Z fix

Fixed Z motor current

Download 3.0.0 v3.0.0 MK2S MK2 MK1 (May 19, 2016) Original Prusa i3 MK2 support

Printer selftest function added

Print statistics function added

Improved stop print menu Autocalibration (MK2 only)

Thermal runaway reimplementation

Download 2.2.4 v2.2.4 MK1 (March 12, 2016) Language support for English, Czech, Spanish, Italian and Polish.

Download 2.2.3 v2.2.3 MK1 (February 21, 2016) Live adjust Z function added. It is enabled during printing of the first layer as the second option in menu.

Multi-language support (EN-CZ-ES so far) - you can choose the language during the first boot and later in the settings.

Quiet or HiPower mode for motors in the settings. HiPower mode is for very large and heavy objects.

More information in support menu

Download 2.2.1 v2.2.1 MK1 (December 18, 2015) Auto correction of the LCD glitches.

Long filenames are scrolling on the LCD.

Download 2.2.0 v2.2.0 MK1 (October 30, 2015) Quieter printing.

Download 2.1.0 v2.1.0 MK1 (September 28, 2015) Changed speeds for filament change.

Motors are disabled when print is stopped from LCD menu.