iPhone 4 Jailbroken Already !

Yes you read that right! iPhone 4 has been successfully jailbroken only within a few days of launch! It looks like the “userland” jailbreak vulnerability which was used by Spirit jailbreak tool was not all that properly patched by Apple, and hence @planetbeing (of Android port for iPhone fame) and @chpwn has managed to get root access on the device using code of @comex’s userland jailbreak method. @Planetbeing posted about this news on his Twitter account.

Think I’m the first one I know about to get a root shell (and SSH) on iPhone 4, using poor @comex’s code (since he has no iPhone 4)

Musclenerd of iPhone Dev Team then followed in by posting this picture a while ago of Cydia running on high resolution screen of iPhone 4.

Congrats to @comex for another userland JB http://is.gd/d5N6I <– hi-res Cydia via @planetbeing & @chpwn iPhone4s

Since iOS 4.0.1 is rumored to be rolled out as early as this coming Monday, an update to Spirit userland jailbreak tool can only be expected after this firmware update has been released sometime in the next week or so which will jailbreak iPhone 4, along with iPhone 3GS (new bootrom), iPod touch (MC models) and iPod touch 3G.
Oh and one more thing, even though iPhone 4 has been jailbroken, don’t expect it to get carrier unlock soon. This is because iPhone 4 uses a new baseband OS, which will require a complete rewrite for ultrasn0w unlocking tool to work on it.

The DevTeam and others have been checking through the iPhone 4, and have noticed the baseband runs a completely different OS than on previous models. The iPhone 3G and 3G[S] both ran Nucleus OS on the PMB8878 baseband CPU (aka XGold 608), where the iPhone 2G ran the PMB8876 (aka S-Gold 2). iPhone 4 uses the PMB9800, or X-Gold 618 – running a separate OS – ThreadX, an RTOS by ExpressLogic.

So what this means is that an unlock for iPhone 4 wont be out anytime soon. So if you are an International user, you are good to go with unlocked versions of iPhone 4. US iPhone 4 users will have to wait for long before they can use this device on carriers other than AT&T.
Stay tuned as we will update you as the story develops!