With STM32CubeProgrammer, I download a .hex file to my target, and it runs.
Then I go to the "OB" Tab, select "BB" (Level 1) and press "Apply". After this the target does no longer run, also not after a power cycle.
To make it working again, I first select "AA" (Level 0) and reprogram the target.
What am I doing wrong? Or can't I protect the chip for read-out at all?
The Target is an STM32H753.
