i' think i've an issue with the intercom (always starting with ptt button

it's locked at first page with 2 windows "update mcu" and "init chanel".
switch one to other. again n again... i'm waiting more than 10 minutes without change...
i've made a factory reset, but no change.
i haven't Walky Talky around it until now.
should i need to have a WT to clear this or it's not normal?
tx in advance
S/N : BV9500Pro0001653