I used Fing to see my device had IP address or not, either the port was open. The device had IP address, but the port was open and sometimes wasn’t. The reason I think was the non-working core. The logs (su and core) showed me the core was in infinite loop. My assumption the integrations (dsmr, mqtt, aqara, philips) blocked the core start.
So my solution is here:
I had a fresh SD card with 12.1 OS (yesterday evening update), and upload my non working backup. Then via CLI I used vi editor to delete the integrations from the core.config_entries (dsmr, mqtt, aqara, philips). Suddenly I got a working :8123 and UI, but there was an error: Unable to fetch auth providers. I went back to the CLI and started a core rebuild and after then a core update to 2024.3.0 and voila I got a login page and a working HA.
Today I have managed to setup my integrations again dsmr, mqtt, philips, but aqara… Aqara had some issue, I couldn’t find solution.
All things considered I got 4 days data loss, and some extra honing issue with aqara and my energy dashboard because I had to update my old dsmr entities.