Hey guys, I have been intrigued by some of the new features of 4.1 (HDR, GameCenter, etc.) and want to upgrade my 3GS. It is currently Jailbroken on 4.0.1 using the JailbreakMe.com website. Is it possible to use PwnageTool 4.1 (like this http://www.redmondpie.com/how-to-jailbreak-iphone-3gs-on-ios-4.1-with-pwnagetool-guide/) to upgrade to 4.1? I want to be able to upgrade, yet not lose all the customization I have done to my phone, such as downloaded Cydia Apps, background icon alignment, etc. If this doesn't work but there IS a way to upgrade, please let me know. Thanks in advance!