android can't boot after os update and falls back to recovery mode

• /e/OS version: 2.9 (3.0)
• Device model(s): Samsung Galaxy S9+, "star2lte", SN-G965F
• Impacted Application: the whole /e/OS
• Affected application/URL:
• Browser/client and version:

The problem

• Today I used the internal /e/OS updater to update to the lastest stable build as offered.
• Installed OS: /e/OS 2.9-s-...-official-star2lte
• Offered OS by updater: /e/OS 3.0
• The update run without any trouble.
• After rebouting, the starting screen shows up for a second and then the system shuts down, to enter recovery mode with the following message and the option "Try again" and "Factory data reset".
• The message: "Can't load Android system. Your data my be corrupt. If you continue to get this message, you may need to perform a factory data reset and erase all user data stored on this device"

Steps to reproduce I could reproduce the issue be rebooting the device.

Current status Meanwhile I managed to roll back to 2.9 by update in recovery mode with ADB sideload. I will not update to 3.0, untill I'm shure, that the offered build is ok.

Technical details

not available yet