Hmm, you are all right.
Ok, I think I have a more conctrete answer:
- If you run an SE navcore, never update the "Tomtom application" aka Navcore. Use the text file described in the SE Readmenot.txt file to construct a protection against Navcore updates which will last until the latest available navcore for you device is augmented.
- If you have patched your navcore in the past but in the mean time a new version is available, you should accept the update and after that repatch the newly received navcore. It could be that you also need to download a newer version of the patch tool.