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Part of the boot process checks the integrity of the firmware image. If the Android system detects any damage to (or an invalid signature of) the firmware, it will attempt to restore a known-good factory installed backup.
The first step of this process is has Android requesting the Android password.
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Allow it to restore the factory installed firmware image.
Afterwards, the BATM will be in a “new” state. No data is stored in the BATM - so no data is lost, however you will need to setup the BATM again as though it were brand new. This includes:
Connecting to CAS: Connect your BATM to CAS
VERY IMPORTANT: firmware updates: Update Your BATM Firmware
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How to prevent this:
This highly intermittent problem will only occur after rebooting your BATM. For this reason, we discourage routine (especially scheduled) reboots. Please don’t reboot unless you need to!