I resurrected the old mx5 from the drawer, but after updating to flyme 6 the mback key stopped working, I replaced 3 keys and none of them worked, I think it is a software problem, I have deleted all the data, I am also went back to flyme 5 and 4 but nothing does not work anymore, my original was a china version with flyme a, but immediately I installed the flyme i just received, could it be that meizu blocked the keys to those who carried out this practice?

I accidentally had it fixed once by updating to the latest version of the ROM. But my fingerprint sensor now is not working agian. Not sure about how it became that.

It happenned to me 2 months ago. I replaced the button and even reset firmware, but nothing worked. Please, answer if you finally solve It.

physical replacement is required