Well I just called them. They tell me that the LMG can only be used once. When I got my unit about 2 weeks ago, I used the LMG to update from the 805 maps to the 810. Now despite the fact I'm still in the 30 days, the TomTom tech support person told me I can't use LMG to get 815.
To those with...
I had a similar problem. It turned out a file on the internal memory had become corrupted. To solve this, I used the "Disk Utility" on my Mac to do a repair of the internal drive, since then no problems.
I've read the handsfree option and the RDS-TMC receiver can cause a corrupted file. For...
I've tried my old 2GB Card and it upgrades no problem. I don't know yet if its the 4GB card, or the set of maps I have on the 4GB thats causing the problem
on the 4GB I have 6.65 versions of North America, USA/Canada, Western Europe
Mine isn't working out to well. When I try the upgrade, after I put the card back into the tomtom, all I get is the unit freezing on the Tomtom Hand splash graphic. It never seems to continue. If I re-install the older version of the Tomtom application it works fine again.
My card is a 4GB...
The iphone does not have a DUN profile... I suspect it is AT&T that crippled it.
I'm going to assume that in the first update many features like DUN will be enabled. For now the lack of international roaming plans keeps me using my blueberry.