Thread: Garmin GMA protection and the "Unauthenticated" status

Originally Posted by catymag

all new Garmin devices use .gma :
37xx 24xx 23xx 22xx 169x 14xx 13xx 12xx
then all the firmwares updated recently in every devices, probably since jan 2010.

169x 14xx 13xx 12xx series have GMA code in latest SW but it works with jetmouse on that moment...