good morning,
on the lg support page there are two firmware versions for uf7787.for ZA - 04.05.80 and for ZD - 04.25.85.
Meanwhile I discovered the cause of the reboots, at any easy push on the motherboard, the TV stops and tries to start on its own, but it does not succeed only if I pull it out and put it back.
I will send the mainboard to a service for reballing the processor in hopes of resolving the problem with the restart, then I will see what I can do about the software if there are any anomalies.
I'll keep you alive with what's going on.
thank you.