I've had a TomTom XL IQ Routes for just over a year now and have been looking to update the maps. I've been putting it off because all of the guides I found seemed a bit complicated, however yesterday I stumbled across the "All New Maps 860.XXXX" thread, and its 'automatic installer & patcher'.
So I decided to give this a try and it seems to have worked, although it actually seemed a bit too ...