Think I screwed up my tomtom 520

Well here's the story...

I hit a tomtom 520:

Device - AK9AJBAATE
App 8.302 (9738/090225) OS:244890
GPS v1.20
Map: v720.1803

I downloaded the stylish transpose and manged to connector the map. But was unable to connector ttsystem file. It comes up with Error ex01 - unable to rank machine (used yDGpatch).

Being the unforbearing person I am, I accidently removed the maps from the figure and replaced them with the new ones I obtain. And today I can receiving the following when play my tomtom:

Problem with transpose you cannot ingest this transpose on this device.

Have I completely tired my tomtom or is there a artefact to intend around this?

Many thanks