Redsn0w 0.9.8b1 Jailbreak for MAC has been released for iOS 5 today by the Dev Team. This jailbreak is only focused on app developers who have Apple UDID because this JB won’t hacktivate iOS 5.0 Beta 1. This means that even if you have the leaked iOS 5 Beta IPSW, you won’t be able to restore your phone if you don’t have UDID code etc. This jailbreak is unintended for common folks and is mainly useful for iOS app developers for jailbroken devices. According to the dev team, this jailbreak will pwn iPod Touch 3G / 4G, iPad 1, iPhone 4 (GSM) (CDMA), iPhone 3GS on iOS 5. Redsn0w jailbreak usually upgrades your device’s baseband so it’s better to stay away if you rely on a carrier unlock after JB. This Redsn0w version is only for tethered jailbreak meaning that you will need to jailbreak your device every time you want to reboot. In case you are an iPhone 3GS owners with basebands other than 06.15, then you must stay away from this for the time being.
Here is what the Dev Team has to say about this 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!
If you under stand all the implications related to this Redsn0w jailbreak for iOS 5, then feel free to download Redsn0w 0.9.8b1 For Mac iOS 5 Jailbreak from here. And for those not opting or unqualified for this, it is just the starting of awesomeness and we believe that as soon as iOS 5 reaches a final release, there will be iOS 5 JB tools for everyone.