There is more to it than can be seen
@grommet
- you must turn on both the display of hidden and system files in windows. BOTH.
See if there are any additional files on the root of card itself.
- there is a small possibility that the device (firmware) is encrypted for a particular software version. Pack the software only, no maps, upload it somewhere and give us a link. Or if you don't want to share it publicly, send it to PM