Since 3.90 firmware (current is 4.00), 60csx can read maps greater than 2 Gb, so size is no problem.
G2 maps are compatible with 60csx, so no problem here too.
Since Homeport can read the map from the microSD card, (and you bought the map on a microSD card) the map is unlocked in relation to the cardID number of your microSD card.

So, check your firmware version, take a look here:[Only registered and activated users can see links. ]
Or examine if the map is correctly "checked" on your 60csx

I can tell you more in a few hours, after I check it on my 60csx...

Quote Originally Posted by horsefly23 View Post
...This garmin gps is a pain.
And for your information, 60csx is a specialist's "tool", not a simple gps unit 27978



My 60csx shows g2 maps OK.
From map screen press Menu->Setup Map->Enter->Menu, and check if it says "Hide" next to it, then it's OK and the map should be visible.
If it says "Show" move down, highlight the map and press Enter to change "Show" to "Hide".

18164578