GoClever Navio2 740 - brak zasilania, potrzebna aktualizacja firmware

Hi,

I have problem with a navigation GoClever Navio2 740. They are completly dead, no power on, only whe I connect to the charger the charging led is on. I need a firmware to try update.
thx

It is not necessarily the case that you need to update the firmware. First, you need to check whether the Li-Ion battery is still functional. Maybe it's his fault?