Apple has released iOS 4.3.4 that is available to download. After ten days, Apple introduced an update for iOS i.e. iOS 4.3.5 and you can download it easily via iTunes or through several links. To download iOS 4.3.5 you must know the following facts:
It was assumed that after the release of iOS 4.3.3 Apple will directly release iOS 5. By looking at the security effort in mobile Safari and the effort made by Comex for Jailbreaking iPad 2 and in other devices Apple had to come up with such software update.
To use against the hackers Apple has adopted the right technique by releasing iOS 4.3.5. in order to develop another jailbreak either tethered or untethered the company has placed a potential jailbreak for the hackers. So in order to exploit it you must know that Apple has released it against future jailbreak as a pre-emptive measure.
Devices like Limera1n bootrom will always be Jailbroken. IOS 4.3.5 is tethered Jailbroken but it can also be simply jailbreak. People don’t want untethered jailbreak and there is no use for releasing it for such devices.