MP54 factory reinstall ?

[zorgen]

Hello
Sorry I already posted the same in new firmware test as I am getting desesperate and can also test any beta

I have a problem with the yealink MP54 phones stuck on red light and black screen

Is there a way to factory reinstall the MP54 for Teams Android OS + firmware ?
I am stuck with many phones now out of warranty MP54 that gone bad, stuck first on initializing please wait and then no network nothing, just red LED and black screen
I already downloaded multiple times the firmware on yealink support and renamed as MP54.ROM but looks like I might need the .bin nowhere to be found ???
I tried both recovery via usb FAT32 and TFTPD
I would gladly appreciate if someone has a working solution for that matter with proper files to re install please
Thank you
Even a working firmware beta just to turn on the phone and take it from there