MuscleNerd tweeted today that the recent redsn0w utility is able to jailbreak the iOS 4.1 beta2 on iPhone 3G and iPod Touch 2G. This is useful for developers only, however good news for everyone.

Here’s some info from the DevTeam wiki page:

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There is no official jailbreak utility for iOS 4.0.1. However you can still jailbreak and unlock iPhone 3G. Just do the following:

• Download the latest RedSn0w 0.9.5-b5 in our utilities page here.
• Download firmware images for iOS 4.0 here.
• Run RedSn0w and point it at the 4.0 IPSW. (Yes – point it at the 4.0 IPSW even though you’re at 4.0.1). This will also hacktivate your iPhone3G at 4.0.1 if you haven’t already been activated by iTunes.
• Install ultrasn0w in Cydia (add repository http://repo666.ultrasn0w.com) if you need a carrier unlock (and in the USA, remember to turn off 3G mode in Settings→General→Network).

DevTeam successfully jailbreaked new iOS 4. They updated jailbreak utility redsn0w to version 0.9.5b5-3. Supported devices are iPhone3G and iPod Touch 2G (not MC). New redsn0w is also able to hacktivate iOS 4.0 for iPhone3G.

You can download redsn0w 0.9.5b5-3 here:

• Mac OSX (x86)
• Windows

For latest version we recommend to use our utilities page.

UPDATE: iBooks issue fixed in new redsn0w 0.9.5b5-4.

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GeoHot released blackra1n. blackra1n is a 30 second ALL device firmware 3.1.2 jailbreak. There is even supports for iPod Touch 3G jailbreak. For now there is only a version for Windows, but the Mac version should be released soon (UPDATE: Mac version is ready)

Download blackra1n utility here.

Warning iPhone 3G and iPhone 3GS unlockers, do not upgrade to firmware 3.1.2 using iTunes, if you want to keep your unlock. Baseband cannot be downgraded.

PS: Blackra1n doesn’t hacktivate the device.

DevTeam updated ultrasn0w. They removed the daemon and used ideas of GeoHot’s purplesn0w, but implemented these ideas in a better safer way. New ultrasn0w 0.9 uses 152 bytes of baseband RAM, which is 6900 timesless than purplesn0w. They also use mobile substrate to patch CommCenter, instead of patching the file itself.

Here is a list of features from DevTeam.

• Works on both 3G and 3GS.
• Works on hacktivated devices.
• Works regardless of how you jailbroke your device.
• Doesn’t patch any mach-o binary whatsoever.  (Doesn’t require a separate patch as each new firmware comes out).
• Doesn’t install any additional daemon
• Has no race conditions, no popups about “Missing SIM”, no network issues
• Is almost 7000 times smaller than its nearest competition
• Is available now via Cydia.  Source repo is http://repo666.ultrasn0w.com (that last “0” in ultrasn0w is a zero!)

Anyway this new solution is a very good one. It uses good ideas in a good way. We recommend to use ultrasnow.