First of all, my respect and admiration to to all the contributors and admins of this great forum.
I have looked at the tutorial section but I couldn't find one that had step by step instructions on how to wipe out and load new maps to my TomTom ONE XL. I currently tried to follow the upgrade tut by cOmputer found under the tutorial sections and I ran into several issues, for example, that I didn't have enough space. (I was using internal memory, NO SD card) and after making it fit, my tomtom just shows the power up picture but never loads. Even though I did a backup the back up fails during the restore process. As you can see, I'm pretty screwed up. Any advice, pointers and help will be greatly appreciated.