If you want to have TMC working with the 9.430 replace the mctx.dat file in the root of your device with the one from the 9.051.
It is a know problem to TT that older devices loose TMC reception on this NC.
I guess your uninformative description of the problem means you got the traffic bar but even after 15 minutes still no traffic info, still searching for a station?
If so the above should fix it.