I have a Garmin Aviation DB subscription as my plane has a 530/430 combo. I added a dummy G500 to my plane and then downloaded the files for that to a couple of SD cards. The terrian.odb and terrain.adb files work as is as well as the bmap.bin file. I don't seem to be able to use the terrain.tdb file as I think the 530 uses a 30 arc second resolution and the G500 is 9 or less. You can take the avn_db.bin file and just rename it to worldwide.bin.
With those udpates have me with current approaches at my local airports (which was what I was looking for training wise)