If your laser is recalibrated then you are out of luck. There is no shop in US specializing in fixing those drives. But there is a chance that your laser eye is just dirty. That's why Audi is using plastic covers for new drives.
Open top cover of your unit and get Windex and Qtip
Laser is mounted on moving bracket. Adjust it so you have access to laser eye. Put some windex on Qtip ....not too much tho. It need to be wet but not dripping wet. Clean your laser eye gently, not pushing too hard.
Close everything back and check your disc.
If this doesn't work , you need to test it with OEM disc.
If original map doesn't work then you need new drive.