The 'main' firmware is flashed.
It is only the **second** time that it tries to re-flash the same firmware that the system enters a loop.
We will try to deal with that **only** if it shows to be significant.
- Reboot the system.
- Enter Diags.
- Export USB.
- Connect to PC.
- Remove (delete) any file update_*.bin.
- Safely remove USB cable.
- Disable Diags.
- Exit and Re-boot (without the usb-pc cable connected).
- It should "just work".
It may take awhile to re-start, it has to recover the journal on the 'main' file system.
Just keep it connected to a wall charger until it recovers.