Hello, I have a problem when connecting rns-315 to my octavia mk2 2005, I have a sound system installed, because of this there is no sound, rns315 does not see the OEM amplifier. Is there any difference between rns315 and Amundsen+ in solving this problem? I have stream audience installed, but it is outdated, I would like to have bluetooth.

The gateway was changed from 1k0 to a new 7n0, I was able to activate bluetooth but no sound at all, in the vcds in block 37 I changed all the parameters but still no sound appeared