Downgrade to Android 10 with one ui 2.5 in A50

[AthulBhasi]

I cant downgrade from Android 11 one ui 3.1 to Android 10  one ui 2.5.

It shows like this👇

*SW REV. CHECK FAIL (BOOTLOADER) Pit flash binary unsupported version.*

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We would request you to register your concern in Samsung Members Application. So, that our concern team gets back to you as soon as possible.

Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Note. please attach the error log file within 15 minutes of the error occurred.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

[Gera_exe237]

Well, I have a problem... I bought a second-hand Samsung A50, I realized a bit late that the device restarted every so often to the point that it was unusable... After some research I ended up updating it to Android 11 ONE UI 3.1 and even installed a very good Custom ROM by the way. The issue is that now the phone no longer detects my mobile network. It only appears "Not registered on the network" (or something like that) when I want to make a call.

Everything else on the device works fine and the reboot problem is gone.

If anyone can help me or has an idea of ​​a solution I would be very grateful.

- I'm from Mexico.