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Restore Android in Xperia!

asked 2017-10-25 21:02:42 +0200

mercurio gravatar image

Hello to all, you pity me and you could help me, please? : '( In the hurry and craving to try Sailfish X, I did not try all the features of Xperia with Android, and now I find a cell phone that does not go to 4G. To send it to repair, I should reinstall Android, but I did not backp the drm keys ... What can I do?

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The 4G physically doesn't work or ofono is acting up? Because ofono did cause all sorts of trouble for many users, myself included, with 4G data not working properly, but that was eventually sorted out by setting the permissions correctly. Maybe this? https://together.jolla.com/question/170056/sailfish-x-mobile-data-doesnt-work-with-old-sim/ Or this? https://together.jolla.com/question/170394/xperia-x-loss-of-mobile-network/ Or this? https://together.jolla.com/question/169156/xperia-x-is-in-mode-prefer-4g-after-reboot/ (this one solved my issue of 4G not working correctly).

oenone ( 2017-10-26 00:40:19 +0200 )edit

I thank you for the answer! :-) I will read carefully the posts you have recommended me! I do not know in fact: I use a virtual manager, that is MVNO, but I tried the phone with a real manager, that is MNO. With the real operator, the 4G symbol appeared for a handful of seconds and then the phone remained in 3G. I do not know if it depends on Sailfish: unfortunately I was silly and I did not test the phone with Android, before I did the Sailfish X flash! Is there a way to figure out if the problem depends on ofono?

mercurio ( 2017-10-26 09:56:10 +0200 )edit

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answered 2017-10-26 02:06:17 +0200

DrYak gravatar image

If you did not back up the DRM keys, you cannot restore them.

In theory Sony might charge you for that, but in practice I don't know if they can actually do it in Europe.

(They should not be allowed to under the consumer protection law : you didn't damage the 4G chip in your phone)


To restore Android

You can find the latest official Sony Android Firmware using Xperifirm

And you can use FlashTool to prepare and flash the firmware and wipe the data partition

(NOTE: Flashtool has its own version of XperiFirm embedded - button "XF" on the right)

You can get inspiration from the steps used to downgrade to Sony's Mashmallow Android.

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Thank you so much for the advice! :-) I'll study them for good. Yes I know that I can not have damaged the 4G chip, but it's just that I did not feel if it worked well when the phone arrived ... :-p

mercurio ( 2017-10-26 10:00:28 +0200 )edit
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Asked: 2017-10-25 21:02:42 +0200

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Last updated: Oct 26 '17