The Navgear Avanteq TMC patch/workaround was one of mine
If I remember correctly, the Avanteq dll, would check the primo.exe version & the CRC of the Branding.zip & would only activate the TMC if these were correct.
@ cybermaus
I don't know the Blaupunkt system so I doubt that the same procedure will work but here it is for you to see.
The download below shows how I achieved this. It requires some hex editor work
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