Can anybody explain me how I could unlock the bootloader of my Sony's Xperia M5? Because in your developer website, there's not my phone in your unlockable bootloader list. And when I type this code into my dialpad (##7378423##), I see that it's unlockable.

I have already tried to search the way to but I can't until now.

Please help me if someone knows how to unlock it

  • For all Xperia devices, use Flash tools to unlock the bootloader (if it can be).
    – Celeritas
    Commented Jan 13, 2017 at 8:48
  • "your developer website" What site is that?
    – Dan Hulme
    Commented Jun 26, 2018 at 8:35

1 Answer 1


I found some info here. I've copied it below

1.In http://developer.sonymobile.com/unlockbootloader/ choose Sony Xperia M2.
2.Submit Email
3.Submit IMEI
4.And unlock bootloader with intruction.
You get the code? Then we continue.
Download the latest version here or Flashtool http://www.flashtool.net/downloads.php

After installation, go the path C: \ Users \ username \ .flashTool \ registeredDevices here and create a folder with the code-name of your machine (you can find out if flashtool click on BLU and see where in the log are in line «Current device» for example, in line 09/045/2015 23:45:08 - INFO - Current device: C2104 - AB100C2DE3 - 1272-4136_R5B - 1269-5420_15.3.A.1.17 - WORLD-a_15.3.A.1.17 code machine will AB100C2DE3. Code which will write your name and location). Later in this folder, create a text file and name it «ulcode» (without the quotes). Open, and in it write your unlock code, that you have on the site Sony.
Save. Write code very carefully.

Now open flashtool and press the BLU. If everything is correct, in line you should write your code, pressing unlock. All should be ready to unlock.

Yes, it is for the M5, not just the M3, at least it says in that post In the title, i sadly can't test it for you as I don't own one


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