If the CRC check executed when booting the part is invalid, the user flash memory is protected with no read/write access allowed. Only the flash mass erase command is allowed. In this case, user code execution is not allowed.
If the CRC check executed when booting the part is invalid, the user flash memory is protected with no read/write access allowed. Only the flash mass erase command is allowed. In this case, user code execution is not allowed.