Help Xperia M2 Ota update FAIL

[RazingDragon]

Hey so today i got android 5.1 update and tried to install of course it downloaded then got me on the android toy screen with energy light in his belly idk i got on half the way and then just rebooted and got back to the lock screen like nothing happend and it said it was not installed ...HELP??

Phone: Sony Xperia M2

And yes i was rooted with KingRoot but removed it with KingRoot and still doesn't work...

Please help!! ;(

 

[glc]

Once rooted, the system is considered corrupted.

 

[scary alien]

Well, not so much "corrupted" as "altered" .

Yeah, you pretty-much cannot install an OTA update if you are rooted. There are some exceptions, of course, but the things that get modified and/or added to your device cause the OTA's cross-checks to fail.

The verification steps did their job since there are files that it was checking to make sure that they're stock.

Giving-up being able to install the OTA was a choice that you made when you rooted your device.

If you want to actually take the OTA, you'll have to somehow revert your device back to stock (which is not necessarily the same thing as unrooting, by the way).

 

[DSanya]

Here's your solution (worked for me):
-Re-flash stock 4.4.4 (18.3.1.(whatever).1.17 firmware) via Flashtool (with or without wipe Chace/Data)
-Re-root with RootKit (if it fail 1st time, do it again, 2nd time worked for me)
-Update your phone via OTA