2004 x5 that had the nav screen and has DSP. I’ve wired the ibus usb as per the instructions but still keep getting this error
Wired by solder into white/yellow spotted ibus wire from old radio plug, plus yellow for +, and black for - from new head unit harness.

I haven’t purchased the licence yet as I was hoping to see the device working in trial mode before I paid out but despite the usb saying “ready” the app tells me it is unable to retrieve the vin?