hi, just after a bit of help.
i have done this retrofit of pro HU w/bluetooth. Installed mic, HU and everything works perfect. The headunit was already coded for PDC, Bluetooth.
Since then i have swapped 'Aux' socket for a 'USB & Aux' socket and hooked that up, but the HU is not coded for USB, so at the minute it only charges ipod nothing else.
Is there an easy way for me to just code the USB directly to headunit?
Do i have to recode the entire headunit for all features (bluetooth, USB, PDC)? If doing this i would have to cheat production date as i have a 2009 E82.