The predominance of Manx would normally be a big stopper but you being a quarter Scot with a love of the wee free-roaming haggis has won me over.
  1. Using a 3 or 4 year old map in the States is not a good idea. Trust me, i've driven there a lot and diving for unexpected exit across several lanes on a crowded interstate at 85mph is not for the faint-hearted [Yep, done it. My co-driver soiled himself].
  2. Forget Jetmouse anyway for unlocking modern maps, it's useless now because of Garmin's GMA protection: [Only registered and activated users can see links. ]
  3. Forget about using the PC Install/gmap folder now too, in retrospect it was foolish of me to suggest that [you should have owned up sooner to the Manx anti-IT dna]
  4. Let's just find you a full NA 2015.40 image already unlocked to download ... oh look! Here comes one now: [Only registered and activated users can see links. ] [post #11]. It's one of several posts for unlocked full images in that thread and there are also locked/original versions full and regional but i've only checked the links in P#11 and they seem ok. If you need an unlocker use this: [Only registered and activated users can see links. ].
  5. Your 270 can recognise an image over 2GiB provided the unit firmware is recent, connect to WebUpdater to check for that and updated Voice, Text etc files: [Only registered and activated users can see links. ].
  6. Create a root folder name Garmin on your SD card, and observe this naming and placement: sd:/Garmin/gmapsupp.img [need minimum 4GB card for the full NA image, regional files may fit on a 2GB].


Tips for survival in the States: Practice speaking with an Aussie or Kiwi accent they seem to like us there more than Brits, especially in CA [not as bad in US as in FR though, boy don't they hate the Poms over there. But as a Scot you can tell Froggies that you hate Poms too]. Pretend you like Brats [not the obnoxious kids, the obnoxious bloated disgusting sausage-like abominations they think are better than the original Brätwurst stolen from the Germans]. Don't even get me started on what they did to pizza! [But pretend you like that too]. When they ask 'Do you want fries with that' NEVER say 'No, i want chips wi'it' coz they'll bring you crisps.

PS: Are the haggis like chooks to breed? I mean, like one rooster per dozen hens is enough?