Can I go back to the stock fairphone rom and lock the bootloader safely?
Hello everyone, I am a user of iodé os and am doing very well. Unfortunately, for some time it is impossible to have a good call quality with my operator (ILIAD Italy) which I don’t experience when I use my SIM card when I change my phone.
I don’t think it is a hardware problem because when I listen to voice on whatsapp the voice quality is perfect.
I would like to attempt to restore the stock rom at this point and wonder if I can do it safely by locking the bootloader.
I read on the documentation that there is a roll-back protection that risks locking the phone in case of downgrade (iodè uses android 12 while the stockrom is still at 11) and in general I am afraid to lock the bootloader since I already had a phone brick by restoring the stock rom.
I am here to ask for advice and try to understand if the situation has changed
Thanks in advance