Well,this is my new system after RMA the first one for stuck on rebooting.

So It was running good on 2.9.2 and I hit the update button wait 30 minutes and the system was stuck on amplifi logo.

AC unplugged, start it again stuck.... Reset from below get back from the dead, reconfigured and now is working as 2.9.3. Performances seems the same as before. But Im scared everytime I reboot it I need 45 minutes to set it up.. If only Amplifi let us access to the firmware so we can restore it or downgrade whenever we want like all others....