If you get the "Something wrong with my SIM card" issue in the USA, it is probably due to letting your LIVE subscription lapse. The American SIM cards are disabled upon expiration of LIVE subscriptions (or if you buy a refurb with no included trial LIVE period).
Once disabled, you need to contact Tomtom phone support to re-enable the SIM card if you later purchase a LIVE renewal.
Note that this does not happen on European models, where the SIM cards don't expire.
jampam, it sounds like your internal memory was corrupted during the update. Try running a chkdsk /x on the Tomtom drive.
mvl
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Americans, do you want to have to throw away all your existing GPS devices, and be forced to buy newer more expensive ones? If not, contact Congress and the FCC, see below.
http://www.saveourgps.org/
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