Earlier in the week, iPhone Dev Team announced that they had successfully jailbroken iOS 5 beta just few hours after it was released to developers of the iOS Developer program.
Dev Team has provided the following information on their blog:
WWDC 2011 is winding down to a close, and developers of jailbroken apps for Cydia are probably itching to get started on all the iOS 5 goodness. It seems like a good time to release the tethered redsn0w jailbreak for iOS 5.
UNLOCKERS AND THOSE PRESERVING THEIR UNLOCKABLE BASEBANDS SHOULD STAY FAR AWAY FROM THIS! You will very likely lose your unlockable baseband if you try to install iOS 5.
THIS JAILBREAK IS INTENDED ONLY FOR DEVELOPERS OF JAILBROKEN APPS! There are just too many broken components (Apple’s official apps, 3rd-party App Store apps, Cydia apps, MobileSubstrate apps, etc) for this to be useful to anyone but those truly looking to fix bugs in their iOS 5 jailbroken apps. (Seriously!)
THIS REDSN0W WILL NOT HACTIVATE 5.0b1! You need to be an iOS developer with a registered UDID to get past all the new activation screens. PLEASE DON’T PIRATE APPLE SOFTWARE! Only registered devs with Macs can develop iOS applications, and only those people will have legitimate access to the beta IPSWs.
THIS IS A TETHERED JAILBREAK ONLY! No new exploits are being exposed with this jailbreak (it uses geohot’s limera1n bootrom exploit), but that comes at a cost. You will need to use redsn0w to “Just boot tethered now” to be able to use many things, including Cydia and Safari. If you see a white icon for Cydia, or if Cydia or Safari crash when you open them, it’s because you didn’t boot tethered.
IF YOU HAVE THE 06.15 BASEBAND ON YOUR 3GS…this redsn0w will get you past the iTunes restore error you’ll get when using the stock IPSW (nobody other than those with the 06.15 baseband should be going anywhere near the stock IPSW!).
The way redsn0w works, you will very likely be able to use this on upcoming iOS5 betas, just by continuing to point redsn0w at the 5.0b1 IPSW. So keep that IPSW handy!
Although most people just launch redsn0w by double-clicking it, remember there are “advanced” options available to those who invoke it from the Terminal shell:
Redsn0w 0.9.8b1 supports the following iOS 5 devices:
iPod touch 3G
iPod touch 4G
Please note that iOS 5 beta is meant only for developers as devices updated to iOS 5 beta cannot be restored to earlier versions of iOS. You will be able to upgrade to future beta releases and the final iOS 5 software when it is release in fall.
Currently, Redsn0w is available only for Mac users. They haven’t provided any information about releasing a version for Windows users. But since iOS 5 beta 1 is available to developers, who need a Mac, it is very likely that they won’t release a version for Windows. But as always, we’ll keep you posted, so stay tuned here at iPhone Hacks or join our Facebook Fan pageor follow us on Twitter or subscribe to our RSS feed.
Please don’t forget to backup your iOS device before you proceed to jailbreak it. You can refer to this post for instructions on how to backup your iOS device.
You can download Redsn0w 0.9.8b1 using this link.
[via Dev Team’s blog]