Yesterday, Apple released iOS 4.3.5, and surprisingly, Apple didn’t patch some of the exploits used to jailbreak iOS 4.3.4, as most tools seem to be working with the update – for instance, redsn0w 0.9.8 still works with the new version of iOS. For now, the working jailbreaks require iOS devices to be tethered to a Mac or PC in order to boot, so if you’re looking for a fully untethered method, the only solution is to stick to iOS 4.3.3. Before you even try to jailbreak your iPhone, iPod touch or iPad, make sure to fully backup your device (including your SHSH blobs via a tool such as TinyUmbrella), just in case. Also note that redsn0w is not compatible with the iPad 2. iOS 4.3.5 for iPhone, iPad and iPod touch was released to address “a security vulnerability with certificate validation.” The update, dubbed iOS 4.3.5 build 8L1, is compatible with iPhone 3GS & 4, iPad 1 & 2, as well as third and fourth generation iPod touch. iOS for the Verizon iPhone 4 has also been updated, and moved to version 4.2.10 build 8E600.
As always, even though jailbreaking is considered legal, keep in mind that Apple sees it as a warranty-voiding act, so do it at your own risk. Please do not use jailbreaks to install copyrighted/paid content you haven’t purchased yourself.