Originally Posted by mayankgamer
What do I need to backup to upgrade to android 4.4 so that I can restore my phone to an original state and get my warranty back.
First of all,4.4 roms available right now are only for unlocked bootloaders
before unlocking your bootloader,take a backup of TA partition (this helps to relock it in the future)
Also before flashing the new rom take a nandroid backup of your current rom (this will help you get back to your phone's current state if u wish after using any other roms)