Help with Raspi4 13.2 issue (won't boot)

Hardware: Raspi4 8GB, Sata SSD via USB3, Zwave, Skyconnect and External BT.
The upgrade to 13.2 left the system unbeatable.
What filesysyems are used for the kernel and system partitions?
What flags are needed for the boot partition to get it Bootable again?