Can you provide the first two letters of the serial number and the full model number?
Originally Posted by stepdans
Both are written on the bottom of your Tomtom. In my case it says Go 920 (4M00.900) and serial M8**********.
Or enter the 2 characters of the serial number here:Another way to be sure which version you need, is to backup the contents of your Tomtom to your PC (always a good idea btw) and then connect your Tomtom to TTHome. It will offer you a "tomtom application". Do NOT install it, but check in the details of the software update what version is offered. Usually it only provides you with the first 4 characters (e.g. 8.083) but with the help of Google we can figure out what the second set needs to be.
A bit of Googleing drives me in the direction of an XL2008, so that would be 8.083.9669 Therefore A would be 8083 and B 9669. However I am speculating now.