I notice that the OTA process and memory map for the electron have a factory-reset area?
When is this used/written to?
Is this understanding of OTA correct:
1) Download device-os part to Flash 2) Verify device-os part 3) Copy to device-os partition 4) Repeat for parts 2 and 3 5) Reset device with new device-os in flash
If part 2 fails, is the entire device-os restored from factory-backup?
We are running into issues flashing device-os parts successfully, and our current logic resumes from the failed part (if part 1 succeeds, but part 2 fails, just re-send part 2).
Do we need to restart the entire device OS upgrade when any part fails? What criterion does the upgrade process use to determine that factory backup should be restored, and can we detect that?