Getting SkankPhone to run on iOS 4.0+?

As many of you may remember the an old 1.0 Prototype Firmware for the iPhone was put up for download last year
(http://forums.macrumors.com/showthread.php?t=627449) I tried flashing the SkankPhone.app from the prototype firmware using the instructions provided on page 8, however it just crashes after a second of loading, however doing the same on some of the 1.x firmwares works. Is there anyway to get it to run on the newer firmwares? Or does anyone have a newer version of the prototype firmwares they could share?