Before i begin, i must state this is G WATCH ONLY! I do not posses files for the other devices, and all the original credit goes to /u/karndev and a super-helpful guide on XDA. However for the lazy, I've decided to make one of my own right here.

You MUST have an Unlocked bootloader and custom recovery (TWRP is what i used)

1. Download the zip file to the same location as your adb/fastboot folder on your PC.


2. Rename the zip to update.zip for convenience sake.


3. Open CMD window, make sure it's pointing to the directory of your OTA update/fastboot/adb files etc etc. Connect watch to computer.


4. Type adb devices just to verify connection (optional.)


5. Then, adb push update.zip /sdcard/


6. Give it a few moments, it should copy within a minute or less.


7. Next, adb reboot-bootloader. Select option for recovery mode. Boot into TWRP.


8. Select "Install" and scroll to the bottom of your directory, select the "update.zip" and swipe to install. It will install like any other ROM, but won't wipe a thing.


9. Reboot to system.


10. ???


11. Profit! You're now running 4.4W.2!