Update HA OS 15.1.to 15.2 does not finish

The update of HA OS from 15.1 to 15.2 on my thin client HP-T630 fails. It begins and is unfortunately hanging up / not ending. Restart of the system is possible. I am using an internal SSD for the core and an external SSD as data drive.

Might want to check this thread: Home Assistant OS 15.0 - no need to skip.