MMI Not Working

[Garybuz]

Recently joined this Forum and have found lots of useful information on MMI not working but unfortunately cant get mine to work yet. Car is a 2012 Audi Q5 2.0 TDI S Line UK Car.

Steps so Far
- Checked 5A MMI fuse front passenger side and 7.5A fuse in the boot
- Checked Radio unit in boot and MMI head unit at front both have power and ground supply
- Used an optic bypass on the radio and head unit
- Charged the battery which was reading 13v on multimeter after charge and also coded in using VCDS
- Changed the centre console panel
- Used VCDS Optical Bus Diagnostic which showed 19-CAN Gateway, 5F Information Electr.(High/D3), 56 Radio all ok both electrical and optical
- VCDS also could not reach 5F or 56 when I ran an autoscan which seems to contradict the information above?
- VCDS also showed a 00384 - Optical Databus fault which I'm assuming is part of the problem?

The only other thing I can think off is order an MMI head unit from eBay and try that but any other ideas would be appreciated