BMW E88 idrive retrofit, No Aux input working

[Abdulk_52]

Hi,

This is my first thread. Thank you for welcoming me to the group!

I have recently retrofit a CIC unit to my 125i cab. Everything seems to be working apart from the aux input. On the system, it will not allow me to increase the volume. The car does not have a mulf or a combox. The car originally had the standard navigation system. I have coded to VO #0910 and $609. The issue still persists. Is there anyone that can help me?

Thanks.