60csx erases maps after loading new topos help

[ibyn]

Each time I attempt to download a topo map to my gps 60csx it erases whatever is on the memory card. I north america 2008 on and it was removed after downloading ny topo. I am loading with the memory card in the unit. How can i download the other topos without losing what is on the 2g memoey card

[Indrid Cold]

That's normal. You have to send both to your datcard at the same time. Please do not add maps to a pre programmed Garmin datacard. Instructions are here:

http://www.gpsfiledepot.com/tutorials/how-to-load-maps-on-my-garmin-gps-unit/

[ibyn]

Thanks for the help