I read David's posting then followed the yourtube video he had found. Followed the instructions and it was all done within 8mins (most of that was just copying over the file to a microSD card)
Do a search for website "talkytoaster" (should be the first thing to come up on your search) to download the maps & follow the video instructions below. (Video tells you exactly which file to download from talkytoaster)
- Copy the file to your MicroSD card though a card reader as it's much faster than doing it though the Garmin itself.
- Get a good quality (High Class) MicroSD card (I personally recommend Class 10 & 4Gb minimum)
You probably won't fill it all unless you intend on using ALL the OSM maps for the whole planet at once