In the CAB files, you'll have a file called dataXX.CHK. Put that file in this folder on your device:
for version 5.10, it has to be under that full path.
for version 5.00, it has to be under \TomTom.
I believe it's a typo in their software, but that's the only way I got any of the voices to work.
Just create a folder called TomTom on the root of your device, then create another folder under it also called TomTom. Finally, copy your CHK file into that folder. You can also copy the dataXX.BMP and dataXX.VIF files into that folder, but that's optional.
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