Имелось ввиду пробовать работать с заблокированным процессором.
Даташит о защите:
"4.5 Protection strategy
The protection bits are stored in Non Volatile Flash cells inside XFLASH module, that are
read once at reset and stored in 7 Volatile registers. Before they are read from the Non
Volatile cells, all the available protections are forced active during reset.
The protections can be programmed using the Set Protection operation (see Flash Control
Registers paragraph), that can be executed from all the internal or external memories
except from the Flash Bank B2.
Two kind of protections are available: write protections to avoid unwanted writings and
access protections to avoid piracy. In next paragraphs all different level of protections are
shown, and architecture limitations are highlighted as well"