Thread: Sailfish OS (officially) on Sony Xperia devices
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Heik is offline Heik
2017-09-03 , 08:45
Posts: 106 | Thanked: 372 times | Joined on Jan 2012
#949
Originally Posted by explit View Post
That doesn't matters, i flashed this CDA 1301-2283 Commercial and Journalist. Its Android 6.0

Afterwards you can extract TA-Partition (DRM-Keys) and upgrade to your CDA (Android 7.1.1) again.

The whole process of Downgrade, TA-Extraction and Bootloader Unlock is very well described here. But its unfortunately in German.

http://sailfishmods.de/2017/07/howto...ys-bootloader/

Maybe this will help non-experts in downgrading to Android 6.

I struggled a lot with the downgrade. That is because I am not so handy especially with Androids nor computers in general. However, if I have good instructions I can manage even Linux :-)

So, always as I flashed 6.0 phone went to bootloop.
However, I could successfully flash Android 7 versions.

Took some time to realize that stored userdata has to be wiped in flashing process, as I had initialized the phone with personal data.

My process in Windows 10:

(previously had installed Xperia Companion and XperiFirm)
Installed flashtool 0.9.23.1. It did not work but after updating to 0.9.23.2 (=replacing x10flasher.jar with a newer version) it worked.

Used F5121_34.0.A.2.301_R8A_Nordic Generic_1302-3140.tft from http://www.gsm-file.com/ .
(Had tried direct downloads from XperiFirm in flashtool, but flashing struggled with that userdata problem, those should have worked too)

In flashtool Firmware Selector remember to select USERDATA under Wipe.
I did not change other defaults and flashing was successful.
 

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