For communication with TRSVC you need at minimum a JBE 3R H2. Then will ISTA, Inpa and Tool32 work. For coding you need a ICOM!
But it's not necessary to code the TRSVC while there is not really something to code.
Tested with E84 and E70 TRSVC, no difference after coding.
And when you push the PDC button it is normal that the PDC is showing and not the camera. That's the way the system works in Exx series.
For showing your Car in the middle you have to code your PDC ECU.
I used Inpa to calibrate my camera, so the steering will fit to the bumper in the picture.