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Posts: 86 | Thanked: 115 times | Joined on Feb 2014 @ Spain
#26
Originally Posted by juiceme View Post
I could not wait a week but powered on my shiny new F5121 for the first time now
(OK I did manage to hold and wait more than a week before doing so!)

But now I have few questions;
  • 1.) my device seems to come with Nougat 7.1.1 preinstalled.
    Now, to save the TA partition it is apparent that I need to downgrade this to 6.x in order to be able to use the tad-daemon workaround.
    The question is; where to get a known-good Marshmallow image for my device? When I search the net I find numerous sites that allow download but how to know which are genuine?
  • 2.) I am unsure how the downgrade is supposed to help; I understand that unlocking the bootloader destroys the DRM keys but how can I flash the downgrade image without unlocking the bootloader?
    Or is there something special about "sony-signed" images that allow them to be flashed without bootloader unlocking?
  • 3.) If the above is true, does the flashing process guarantee that I can only flash a real-sony-signed-image with locked bootloader?
    If that is true, then I don't need to worry about where I download the image, right?

1) You can download Android 6 using Xperifirm, the answer is here: https://talk.maemo.org/showpost.php?...&postcount=785, and you can download Xperifirm from XDA Forum: https://forum.xda-developers.com/cro...oader-t2834142

2) You don't need unlock the bootloader to flash the downgrade image

3) Yes, you can only flash sony image without bootloader unlocking