Not knowing that Garmin GPSMAP Series with SD Card with the update to v4.20 and higher, doesn't recognise any other maps then the original, I updated to v 4.60.
Now I can't use my own marine charts anymore. I would like to go back to v 3.80 (the last one whitch is working) but I can't nowhere find it.
Could somebody provide me with a link, or the software self?
Thanks in advance
alex