I have been hacking my iphone for years now and when ios4 came out it really messed me up. I finally learned the location of files that needed to be changed to make my phone 100% Lindsay Lohan. When ios4 came out they changed everything again.
I will post things that I couldnt find on the internet hoping that google will lead you here so you dont wanna shoot yourself when you cant find help anywhere.
I have found some great sites out there that you can use and almost always can get help from the forum members.
Check here
http://modmyi.com/forums/
Written by Kevin - Visit Website