Download link here: http://factorysend.com/FairleighMcginty0942/Redsnow iPhone Dev Team has just released a testing version of RedSn0w which will untethered Jailbreak of iOS 4.2.1 for all iOS devices including iPhone 4, iPod touc 4G and iPad. It's for Mac OS X users only. It's a testing version and not a public release so before proceeding with this Jailbreak tool you must read these articles first.