@Proukaet
I suspect that you are well acquainted with that device?
On the TT server I could not find the 7834 you mentioned, but the 7833 and the following 7842, which are still original CAB files
To be precise:
7,833.8710.newcastle7.cab
7.842.316501.Carminat_TomTom.cab
Perhaps worth trying out to test 9,510 to create a wider choice of maps