Got an Audi Q7 fitted with a Bose sound system and MMI 3G high.
The MMI was updated with software which updated the whole MMI units and also updated the amplifier which stopped working correctly as the fader was working the wrong way and the bass was not so effective.
There was no way to downgrade the MMI Bose amplifier as it already had a higher software version.
The coding was set to 000000, even trying to code it online was being rejected.
After spending alot of time a solution was found.
We managed to rectify the problem and get the system working perfectly.
We can now offer a recovery service , program and code your Bose amplifier to work exactly as it should .