I just finished the downgrade to 1.1.1 and jailbroke using i.unlock.no. I have not done anything else yet but have these problems-
-sounds like youtube, keyboard click, and lock click sound can only be heard through the speakerphone when the headphones are plugged in otherwise not at all. I noticed the abscence of the clicks as soon as i downgraded before the jailbreak.
-camera looks ok when looking at in viewfinder mode but as soon as you capture a picture it turns a red or green tint. This happened after jailbreak as i tried the camera from the contacts menu right before the jailbreak and it was fine.
-incorrect sim message, even though the stock att sim is still in. Due to this it wont let me connect to itunes.

My plan the whole time has been to go otb 1.1.3-1.1.1 jailbreak and activate-1.1.2-1.1.3 and then get a *sim chip so i dont have to mess with the baseband or do anything that cannot be undone by a restore to minimize potential problems.

So what is my next step? Keep upgrading and these thing will go away? Start over?