Thread: Garmin Aera 500 gupdate file

Originally Posted by northarrow

Device now works fine, but i have another unexpected issue, before re-formatting a made a copy of aviation data bases, i copy-paste them back and to my surprise device shows message 'cannot unlock databases'...

Hello.

The reason is that the feat_unlk.dat file is missing in the ROOT directory of the AERA 500. If you made a full backup of your navigator files, then copy this file back to the ROOT directory.