The courses are too large to fit on the device. All 3 course updates are 61.23 MB and Garmin only has 60.1 MB free. I cannot select which regions to update it will only do all3, so just wipes all of them and fails to install. I am using windows 10.

I think it has been possible in the past to deselect e.g. Pacific.

There are many similar queries, so it is clearly a problem, but no soultions that work have been posted as far as I can see.