Brief Answers to the Big (Pyra) Questions

I did some experiments whit Pyra Images, got me the Bullseye Image on Internal Storage, which caused lots of issue, and went back to Buster this week..

Now the Question: When and how was this Audio Issue solved? I remember, i did solve this issue back then by moving some dials in Alsamixer, and the Config was saved on the Nand, this fix might get done bevor this was solved by Update, but i dont know if there was this Update, or where whe told back then to solve it by ourself in Alsa? im using this buster image and did allready a apt update upgrade session..
But im now a bit worrying that i get this Audio Issue..