I am looking for someone to give me a solution for an android phone: I want to prevent someone from flashing rom successfully. Why do I say successfully? Because I was told by manufacturers it is impossible to prevent flashing via sp flash tools. So I want to do something that will make the flashing unsuccessful. I read about signed binaries. It said if someone flashes a binary not according to the signed one, so the image won't show. It can still be flashed, but won't show up correctly. I don't know, thats just what I read. Or we can put a virus or brick the phone when it tries to start up. Or password protect. Some option please.
This is for the unihertz Jelly pro. The manufacturer says they can't do anything. I don't believe nothing can be done.