Sunsynk 8kw Firmware failure

Anyone have issues with a firmware update.

Normal light is off.
After update SS only runs off the grid.
Doesn’t use solar or batteries.

Logged ticket, says waiting for engineer.

I assume you did restart the unit all together, total power Cycle?

Yes I did a full Power down and a factory reset

Ever since the upgrade and now the downgrade getting this error :

F34 AC_Overload_Fault

SS support said it needs to be sent in for repair.