If you are not sure how to get this running please visit our forums and ask for help. - http://pr0x.org
INSTALLATION INSTRUCTIONS :
Download winpwn from http://winpwn.com or .org i can't really remember.
Select iPwner, once selected choose this custom firmware, once you've done that switch your iPhone into DFU mode, if you are not sure on how to do this check through google, it should be the first few results when searching for "iPhone DFU MODE"..
Other then that this is what this build has.
Fixes for various itune 6** 5*** errors.
Custom Payloads were made so some other fixes can be put into place, other then that this is probably the best and cleanest firmware out right now.