Now to say more about a reverse part. The point of this is to make your phone available for official updates, and make it possible to do. Thanks to Ranalakshay36 and Bedroom we have information that you can apply OTA without need to relock bootloader on the phone. However, relocking is still mandatory if you want to install a fresh new rom using RUU.
The first important thing for this is: PEOPLE, MAKE A NAND BACKUP OF STOCK ROM BEFORE REMOVING OF ANY APP FROM SYSTEM OR INSTALLING A CUSTOM ROM!!! This will make this process much easier to do.
RECEIVING AND OFFICIAL UPDATES INSTALLING
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Part one:
Ok, you just unlocked bootloader and rooted your phone (no custom rom installed), but you received a notification that you have an official update available and you want to install it. No problem at all if you didn't touch the apps on system partition (some of them are necessary for official support), and all you have to do are these 2 things:
1. Reinstall stock recovery - I attached it. Remember the part about custom recovery? The process for this is the same:
- download recovery I attached, rename it to recovery.img and put it on the root of c: drive on your PC
- reboot phone to fastboot
- connect it to a PC
- open command prompt and guide it to the folder where you have adb platform tools installed
- issue commands
fastboot flash recovery c:\recovery.img
fastboot reboot-bootloader
fastboot erase cache
Now your phone should be ready to apply official update.
