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Unable to Authenticate GB Discoverer Map card
Posted: Sun Mar 31, 2024 3:38 pm
by Roy47
Hi I have a gb discoverer premium1:25 gb map card. This works perfectly with garmin 64 and 66 but says can't be authenticated with my 67
Re: Unable to Authenticate GB Discoverer Map card
Posted: Sun Mar 31, 2024 5:48 pm
by JungleJim
I suggest to check with Garmin Support. The GB Discoverer maps are quite old, so it could be they are not compatible with the GPSMAP 67 anymore.
Re: Unable to Authenticate GB Discoverer Map card
Posted: Sun Apr 28, 2024 4:32 pm
by Backstreetbob
Is it a genuine Garmin card or one of the ebay jobbys ?