19.3.2.2.1 Case 1: SAM-BA Monitor is disabled (the “MON_DIS” word is filled in the Boot Configuration Packet)

In this case, the bootstrap itself or the customer application must be in charge to update the bootstrap, by writing the new bootstrap in the boot memory in replacement of the existing one.

To do that, the program in charge to do the update must be able to:

  • retrieve the new ciphered bootstrap,
  • erase the existing one,
  • program the new one.
Important: The last two operations must not be interrupted, otherwise the boot process could be broken.