I've bought an 800 with the 1:50,000 Garmin GB discoverer maps, but I live in Norn Irn and the maps don't cover here...
I dont fancy shelling out another £100 to Garmin for the Northern Ireland Maps alone, and I'd like to hang onto the GB maps for the odd trip to explore remote bits of GB by bike.
Is there a way of getting Northern Irish maps that will work on an Edge 800 but not from Garmin?
Thanks in advance, Andy.

