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The firmware key is checked at every Poer ON. Key mismatch will prevent the system from arming.
- Result of key matching is stored in the POST log.
- Check sum of the code and date part of the firmware is to be calculated. This is called the registered checksum. The checksums are also stored in the bootloader.
- Checksums are compared at every Power ON.
- Check sum mismatch will prevent the system from arming.
- Check sum match is stored in the POST log.