Quattro does not wake up after online firmware update to v552

I tried to update my system and after inverters update my system stopped.

All lights were rapidly flickering on inverter and that was it, no MK3 possibility no nothing.

I disconnected everything that was connected to inverter and tried again after but still nothing.

Any recommendations?

I think you will need to use VEflash now to reflash the firmware:
https://www.victronenergy.com/live/updating_firmware:updating_ve.bus_products

Sorry all i was just to overwhelmed and forgot that if update is not finished properly then you can force detect inverter in victron connect and start again.
It worked for my case.
Remote update failed?! You can fix it locally!