After our previous review of the application of artificial Geohot BlackRa1n and Cydia is able to jailbreak iPad, now turn to the iPhone Dev Team to Jailbreak for iPhone OS 4.0.
Whereas the iPhone OS 4.0 is the latest OS that Apple has just released to further enhance security for users of Apple, the iPhone’s new operating system was also overwhelmed with reared in such kinds of capabilities not previously exist at the OS version, one of which is Multitasking.
Here is the video when the iPhone OS jailbreak by the iPhone Dev Team: