[audi][rns-e] digital tuner

[Traduzione in corso...]Hello All,
sorry for English.

My goal is to connect bluetooth (a2dp) as aux, or better instead of digital radio, I've purchase and check sirius receiver but there is a problem, in EU version I can't code it and sirius not communicate with radio (send a few frames and after couple seconds go to sleep).

I saw that there is possibility to code 'digital tuner' but I have no clue what CU should I connect

So maybe someone here know at least partnumber and if it works similar (from user iface point of view)to siurius or xm, or maybe there is a way to use sirius or xm receiver without loosing odd frequency.

thanks in advance
btw
I have some scrap of info about PQ35 (VW416/428) motor canbus, I can't post it directly but if someone ask about certain CANid I can check it.

Mit freundlichen Grüssen
Lukasz