Here is a link to a description of what all the CAB's in the stock ROM do
http://forum.ppcgeeks.com/showpost.p...6&postcount=31
Just FYI: I would hard reset the phone then right before you see the 'customization' dialog soft reset with button at bottom. Do this two more times to be on the safe side and you should be good. Try to get it before you even see anything about customizations, such as as soon as you see the today screen.