'link' Download | Audi Mmi 3g Plus Firmware Update
Sometimes, a firmware update can reset the acoustic parameters of high-end sound systems. If your audio sounds "flat" after an update, you may need a fiber-optic loop tool or VCP/VCDS software to re-parametrize the amp.
If the process seems too technical, consider these options: audi mmi 3g plus firmware update download
What the update typically includes