Help SGS back to 2.1 from 2.2

[mjlyte]

hello
i updated my galaxy s from org 2.1 to (unoffical) 2.2 with odin3 and i'm not happy a lot of buggs my internet is not working, i can not install some apps from market....etc...

so my question is how can i install it back to 2.1

help please and tnx for answers..

mjlyte