The original card was removed while the unit was on, or the files have become corrupted.
Sometimes a hard reset forces the unit to re-read the SD card, as explained in. Summary of Solutions Error Screen (Battery cut)
: The SD card must remain inserted for the unit to operate. Removing it will cause the system to stop working immediately. Battery Disconnect
The original card was removed while the unit was on, or the files have become corrupted.
Sometimes a hard reset forces the unit to re-read the SD card, as explained in. Summary of Solutions Error Screen (Battery cut)
: The SD card must remain inserted for the unit to operate. Removing it will cause the system to stop working immediately. Battery Disconnect