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1) You need to have Samsung 4.3 Bootloader or newer. Please use latest KitKat Bootloader if you wish to be able to plug your phone while turn off.

(Please note that you don't have to update your bootloader unless you want to, now that Agni 4.3.9 kernel lets you charge your phone while being off.)

2) TWRP 2.8.5.0 recovery is recommended.(Linked: TWRP thread

3) Next, remember to backup your app and your efs folder. That's something that you always should do before flashing anything

4) Go to TWRP recovery via pressing home + power + volume up button at the same time.

5) Make a nandroid backup if you haven't done so.

6) Use the "Clean to install a new rom" option in Wipe Data and system.(clean installation recommended means wipe internal)

7) (Reminder) Remember that everything you flash you do it at your own risk so do your research before flashing anything.

8) Now go to choose to install the rom zip file.

9) Flash the rom. It should take less than 10 minutes till it boots.

10) For those getting black screen or stuck on the boot animation after flashing the rom, please reboot to recovery and flash Angi kernel 4.3.9 to make it boot.

11) Enjoy the ROM



** If coming from a CM/AOSP ROM, flash a TW ROM before trying to flash DN4**