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Quote Originally Posted by Boki_Srb View Post
...What is the BASIC difference between your tablet and HU? I don't mean hardware.
SYSTEM, rider. Operating system and its functions. TTS is directly attached to the system engine or subsequently installed.
It is very common for manufacturers of such devices to install a crippled/depleted system. Missing features, drivers, plugins ...
Because they are in principle intended for a car device, and not for telephoning, surfing, playing...

It is most likely that some of the required functions have been omitted in this modified file, ie calls only those that are complete.