nexus s rooting wifi error problem So, I have unlocked my Samsung Nexus S that runs on Android 2.3.1 and i have rooted it. The problem now is that I cant open wifi anymore, it keeps telling me "error" whenever I click on wifi ..

Why is this happening? How to fix it?
I fixed this by restoring only the android "boot" module from the original rom backup:

I used the clockworkmod recovery which can also be installed from the rooted phone using the "rom manager" app. But instead of making a whole recovery, i simply went into advanced recovery options, selected the above mentioned backup folder, and selected to restore only the "boot" module:


start clickworkmod recovery, 
select "backup and recovery" 
select "advanced recovery" 
select the image of the original backup (see below)
select restore boot


This post describes how to restore your nexus s to original stock android and provides a backup of the original rom: http://forum.xda-developers.com/showthread.php?t=884093