Hello.
I just bought an Echomap 62 Dv UHD GPS and I can't see my custom chart that I've used for many years on older Garmin units. I get the legend "Unable to authenticate the map". Does anyone have a solution to this problem.
I will be very grateful for any help
I just bought an Echomap 62 Dv UHD GPS and I can't see my custom chart that I've used for many years on older Garmin units. I get the legend "Unable to authenticate the map". Does anyone have a solution to this problem.
I will be very grateful for any help
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