T7x T8x epm stopped working

Hello all, I have always used T54w templates with my T7x phones, and then just edited the basefile to include the extra buttons. However, this appears to have stopped working. It fails to provision the phone at all.

I believe it has something to do with the .boot vs .cfg or firmware file or some type of missing file. Not sure as its above my head. Been trying to use Gemini to figure it out. Can’t seem to get it to work though. Has anyone else run into this yet? I really hope there’s a workaround until Yealink helps us out and adds the models..