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dimanche 3 avril 2016

[GUIDE] Fully Restore Stock and Unroot L90

Hello, everyone.

Even after flashing stock ROM with kdz your L90 may still display ROOTED in download mode or in the RCT test (open Telephone app and type 3845#*XXX# where XXX is your phone model, 410 for instance if you have a D410hn). The fix is relatively simple:

1. While still rooted, use a file manager with root access and navigate to /persist folder, then backup to a safe place (just in case you need them later) and delete these two files:
  • rct
  • rct.cfg

2. Reboot to recovery and do a full wipe: caches, data and system. It's important because maybe some files that trigger the rooted flag may be in /data/local/tmp, for instance;

3. Reboot to Download Mode (bootloader) and follow this tutorial to flash stock kdz:
http://ift.tt/1w6JQYb

Before flashing kdz you shouldn't already see any ROOTED on screen, and after booting to stock the RCT tool should not display that your device is rooted anymore.

PS: I am not sure if deleting these two files will break anything, I have just did these steps and my device doesn't show ROOTED anymore. Ideally, you should backup /persist before rooting (I don't think it's possible anyway, at least not on Lollipop), or at least backup them just after rooting, so you can replace the files as explained is the treads bellow.

Credits
@Drachenminister - http://ift.tt/1RZ9VNP
@AriHell - http://ift.tt/1UHxFtP
@k0nane - http://ift.tt/1RZ9VNV


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