I thought that I would open up a new topic, as my model is different to the one that is stated here, although it is a TomTom also.
My previous model, a GO730 wouldn't show the shutdown image I had set up. It worked for a short time, but then started to use the startup image.
I reported this to TomTom and after many emails back and forth; they basically just gave up on me. No matter what I tried, I just could not get the shutdown image to show. I have followed all the correct procedures but to no avail.
My GO730 finally went south due to a problem with the screen, and through my extended warranty, I got a newer model, a GO750.
What I find strange is that this is doing the same thing. Through TomTom Home, the image I want to show is in the correct folder but it just won't show. The image that is displayed for shutdown is not even on the device. Well, at least I can't see it through TomTom Home.
I suppose it's just one of those things that I'll have to live with.