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Please read this if you considering unlocking the boot loader or rooting your phone.
Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. You should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved.
For more information go here http://unlockbootloader.sonymobile.com/
Please also note
The Sony Xperia support team will not be able provide any support, related to unlocking the boot loader or rooting your phone.
We also recommend you to read the below blogposts.
Sony Xperia support team
2017-11-27 01:33 PM
I have updated to the new oreo firmware and the phone UI is skipping too many frames randomly, I have tried everything force reboot, software repair, safe mode and all. Frame skipping problem is very annoying
How can i downgrade it back to 7.1.1 since I can't find any FTF files anywhere
2017-12-02 09:56 AM
Can i just go back? Before oreo., this oreo update kills my phone., overheating everytime., draining the battery fast, even setted to the lowest brightness and lowest sound as possible., even not using it continually drains and heating., how to go back., i hate oreo update
2017-12-15 03:35 PM
Ever since I updated to nougat, I have been having problems with my data signal. What happened after update;
1 LTE disappeared (note that LTE was working before the update)
2 since I am like 100 km away from the nearest Sony Service Center, I stuck with 4G network but never did it gave a strong signal after the upgrade. (lucky if I get 3 bars)
3 tried using 3 different prepaid network (Smart, Globe and Sun) Sims but still the same sh*t.
Please help.... A tech once told me I can have it rooted but it would void my warranty. It s there another way I can downgrade to Marshmallow?
2017-12-29 12:43 PM
Hi, can i know how to revert back to nougat bcoz the oreo update make my XZ slow and lagging while playing some game. I'm totally regret the moment i update the phone coz my bro using the same phone like me but he didn't update to oreo he can play all games flawlessly. Please help me, thanks.
2018-01-07 08:54 AM
How can i go back from Android Oreo 8.0, to this version of Android 41.2.A.7.76
Because the Oreo 8.0 update is very instable, camera doesn't work, app listing in folders sometimes lost and turn ti default, alarm sometimes stays on even if i turn it off,.... Etc.. 😑... 😑
I tried evey solution suggested by Xperia Care, and the problem of the camera stays related to the camera App.
I do believe that every user had chosen Xperia for it's camera, and the fact of sending systems updates with technical problems in it without patches for Three months is a unsafe for a nice product.
Please Help, this is getting very annoying and depressing, compared to other manufacturers technical support