iPhone Dev-Team has announced that they published their first jailbreak tool, JailbreakMe for iPhone 4. This tool will help users to gain access to the web by exploiting Safari browser.
Installing the Jailbreak tool does voids the phone’s warranty, but once it gets installed in your phone it will allow you to run all unsigned applications and other features that are restricted by Apple in normal mode.
JailbreakMe tool can also jailbreak the iPad and older version iPhones, except iPad’s with 3.2.1 firmware version. Dev-Team also told that users can easily revert back to their original firmware by sync their phone with iTunes.
[via: electronista]


hm
I thought that return back to their original firmware not possible
Denis