Unlock error at Xperia F5122

General
1

Hi All!

I recently bought an F5122 motherboard from AliExpess :

F5122_mobo
F5122_mobo1187×694 167 KB

As described, I turned on the “OEM unlock” function after I received the unlock code :

Developer
Developer1689×1622 185 KB

The unlock command does not work, the error is in the picture :

Screenshot_20260724_121405
Screenshot_20260724_1214051042×831 101 KB

I entered the codes of both IMEI numbers, neither is good. The phone communicates with the computer because I received the unique code of the phone.

This happens every time after a hard reset.

Is there any solution ?

Thank you for your attention!

2

not sure about mainboards, but for complete Sony phones there are usually asian versions around that do not allow bootloader unlock, maybe something like that