Upgrading to mib2 headunit to retrofit full link (CP removal question)

[Crimu]

IT works with 6,5" and 8" Display

Perfect. Thank you!

 

[Gh0st]

Hi, I’ve managed to do the same thing just today - upgrading from a 5F0 035 869 A to a 5QA 035 858 A. Had to use an AliExpress harness to get additional cable for the 8” screen and stuff. Managed to remove component protection etc. however my issue now is that the tweeters are working but there is no bass from all doors. The sound is very tinny. I believe this is a dataset/parameterisation issue but not sure where to go from here. How can I figure out what byte to change to get it all to work?