maybe @dirtbikermp3 has another img file on the device or sd-card, and that file is the one is locked and the reason to receive the message

Quote Originally Posted by Cnfhbr View Post
@dirtbikermp3

Please try to do a hard reset (or clearing Nonvol) after updating.

IMHO: Map cannot be used if your device displays the message "Cannot unlock maps" concerning this particular map.

Need confirmation from other users of newest devices ...