Code: sudo nvram boot-args="kext-dev-mode=1"

Code: sudo kextcache -system-prelinked-kernel

Code: sudo kextcache -system-caches

Code: ioreg -l | grep "board-id" | awk -F\" '{print $4}'

Code: sudo kextcache -system-prelinked-kernel

Code: sudo kextcache -system-caches

Code: nvram -p | grep "kext-dev-mode" | awk -F'=' '{print $2}'

Code: sudo kextcache -system-prelinked-kernel

Code: sudo kextcache -system-caches

There are a ton of threads about this and I just wanted to put all the findings in one place with the updated procedures since there have been a lot of modifications recently.First you need to know what this does. This enablesa feature of Continuity but they are not the same.Continuity is in charge of Calls and Messages (both iMessage and Texts) being sent to your mac or other iDevice, and Airdrop(computer to computer). For continuity these steps are NOT required.is in charge of opening an application on your iOS device then continuing it on another device (i.e. open an email and continue it on your mac) as well as instant hotspot and Airdrop (computer to iDevice). This guide will activate these features as long as you have Bluetooth 4.0 LEBasicallycard to work but Apple has blacklisted some of the models that came standard with BT4.0LE so a modified Kext is required.Macbook Air: Early 2008-2010 - Requires new bluetooth/wifi card and modified Kext.Macbook Air: Mid 2011 - Requires modified kext onlyMacbook Air: Mid 2012-2014 - Works OTBcMacbookPros: Mid 2010 (15" only) - Requires new blutooth/wifi card and Modified KextcMacbookPros: Early or Late 2011(all models) - Requires new blutooth/wifi card and Modified KextcMacbookPros: Mid2012 - Works OTBRetinaMacBook Pros: Works OTB.cMacPros: Early 2008-2012 - Requires new bluetooth/Wifi and adapterNMacPros: Works OTB .MacMini: Early 2009-2010 - Requires new bluetooth/Wifi Card and modified Kext.MacMini: Mid 2011 - Only requires Modified KextMacMini: Late 2012 - Works OTBiMac: Mid 2007-2011 - Requires bluetooth/Wifi Card and adapteriMac: Late 2012-2013 - Works OTBI will also update the list above if someone lets me know that something is off. Since I don't have access to all these machines I cant try them all out to know 100%Note: Earlier MacBookPros then listed and 13"+17"MBPs had the wifi adapter in the screen hinge so newer cards will not fit inside of them.*A bluetooth dongle can be made with Apples bluetooth cards but this is in very early stages and complete compatibility/steps required is not well known or tested.If it says you need to update your bluetooth/wificard here is a list of what card you should buy. While there may be other comparable cards these are the most up to date I have seen. Remember the only requirement is that your computer has Bluetooth4.0LE.MacBook Pro/Mac Minis: Apple Broadcom BCM94331PCIEBT4CAX Gives BT4.0LEMacBook Air: Apple Broadcom BCM94360CS2 This also gives older devices Wifi ac as well as BT4.0LEcMacPro: Apple Broadcom BCM94360CD This also gives older devices Wifi ac as well as BT4.0LE you will also need an adapter as this card does not fit directly into the cMacProiMac: Apple Broadcom BCM94360CD This also gives older devices Wifi ac as well as BT4.0LE you will also need an adapter as this card does not fit directly into the iMacI am very excited to give you Dokterdok's Continuity-Activation-Tool . You no longer need to Modify the kexts on your own. This program automates everything for you.I will still leave the instructions for people who want to do it on their own.To go back to originals follow these steps:1 sudo nvram boot-args="kext-dev-mode=1"2 reboot3 delete old kexts in /System/Library/Extensions/4 sudo kextcache -system-prelinked-kernel5 sudo kextcache -system-caches6 repair permissions7 reboot8 used kext drop for the backed up ones9 sudo kextcache -system-prelinked-kernel10 sudo kextcache -system-caches11 repair permissions12 reboot1. Download and install 0xED in your Applications folder, you can get it from here:2. Download and install KextDrop in your Applications folder, you can get it from here:3. Repair your disk permissions. Go-> Utilities-> Disk Utility, then First Aid, Repair Permissions.Then open Terminal and type :4. Restart your machine.5. Open Finder, type CMD+Shift+G and go to /System/Library/Extensions/6. Copy the files below to your desktop and then delete the originals.Code:IO80211Family.kextIOBluetoothFamily.kext7. Go to Terminal, and type:exactly as below:then8. Reboot (At this point your wifi will not be working)9. Go to Terminal, and type: (exactly as below)10. Your result should look like : Mac-742912EFDBEE19B3, (yours might be different.). Copy it to your clipboard (Select and CMD+C). Don't close terminal yet.11. On Desktop, Right click IO80211Family.kext and "show package contents" /Contents/Plugins/ Right click AirPortBrcm4360.kext and "show package contents" /Contents/MacOS12. Right Click on AirPortBrcm4360, and choose OPEN WITH: OTHER: 0XED13. In the upper right hand corner under “search text" search for "Mac-" (without the quotes).14. Look at the first result, for example, it might be Mac-00BE6ED71E35EB8615. Delete the numbers after Mac- and Manually type your Mac- numbers (from step 8 be very careful not to delete anything else just the numbers.16. Press down arrow till you get to the last Mac- (should look like Mac-2E6FAB96566FE58C)17.Delete the numbers after Mac- and Manually type your Mac- numbers (from step 8 be very careful not to delete anything else just the numbers.18. Click Save (the red circle)19. On Desktop: Right click IOBluetoothFamily.kext and "Show package contents /Contents /MacOS20. Right Click on IOBluetoothFamily, and choose OPEN WITH: OTHER: 0XED.21. In the SEARCH field (upper right corner) type:MacBookAir then enter.22. You will find a block of text containingCode:'MacBookAir4,1''MacBookAir4,2''Macmini5,1''Macmini5,2''Macmini5,3'Manually replace the numbers with ones only so they all look like:Code:'MacBookAir1,1''MacBookAir1,1''Macmini1,1''Macmini1,1''Macmini1,1'Important: Be careful not to add any character while doing the replacement.23. Click SAVE (the red circle button) and quit 0xED.24. Open KextDrop, and Drag and drop the IO80211Family.kext that you modified into the window.25. Click INSTALL.26. Repeat steps 24 and 25 but for your modified IOBluetoothFamily.kext27. Go Back to Terminal, and type the following commands. Wait for each one to finish.You should see:kext-dev-mode allowing invalid signature -67061 0xFFFFFFFFFFFEFA0B for kext IOBluetoothFamily.kextkext-dev-mode allowing invalid signature -67061 0xFFFFFFFFFFFEFA0B for kext AirPortBrcm4360.kextNothing should show here.FinallyIf printout says "1" then you are in kext dev mode and your new kexts will be allowed to run.28. Reboot. Make sure you have an Internet connection for the next steps.29. Go to > SYSTEM PREFERENCES> GENERAL, at the bottom click ENABLE HANDOFF.(if this is not available then something went wrong and you have to use KextDrop to put your old kexts back in then runagain, repair your permissions and start over)30. Go to > SYSTEM PREFERENCES> ICLOUD, click on SIGN OUT.31. On your iOS Device, go to SETTINGS> ICLOUD and SIGN OUT.32. Restart your Mac and iOS device.33. Go to > SYSTEM PREFERENCES> ICLOUD, and enter your credentials to sign in. (make sure keychain is active)34. On your iOS Device, go to SETTINGS> ICLOUD and SIGN IN.(make sure keychain is active)35. Repair your disk permissions. Go-> Utilities-> Disk Utility, then First Aid, Repair Permissions.1:Log out of iCloud on all devices, reboot and log back in starting with the computer.2:Make sure your keychain is enabled under Preferences-> iCloud on both devices.3:Make sure you iDevices have a charge over 25% (sometimes it turns handoff off if battery is too low)4:Make sure Handoff is enabled under Settings-> General-> Handoff on iDevices5:Make sure they are on the same wifi network and bluetooth is on on all devices.6:Make sure you aren't pairing your devices under bluetooth.7: If an OS X update modifies the kexts involved in this then just run the program/redo the kext edit and it should work again. If any new steps are needed I will update accordingly. This does not mean every update will knock this off just ones that modify the IOBluetooth and IO80211Family kexts.Hopefully this can be one place to get all the facts strait.Goodluck!Tutorial was modified off DokterDoks original instructions.Thanks to: DokterDok, Lem3ssie, Skvo, TealShark, Manic Harmonic, rob3r7o, mikecwest, MacVidCards, brucerb and anyone else I forgot...