It's currently possible update to iOS 7 beta without having your iPhone's UDID registered in an Apple developer account.
We have tested and confirmed it working on the iPhone 4S, a brand new iPhone 5 and an additional iPhone 5.
To perform the update you must get a hold of the iOS 7 ipsw, press and hold the Option key (Shift for Windows) and click Update in iTunes. Select the iOS 7 ipsw from the popup window to install.
It's unclear why this is working. Only iPhone devices registered by developers are supposed to be able to install beta firmware. Perhaps Apple took down this check since its servers are being flooded at the moment.
Sn0wBreeze creates custom firmware and allows users to preserve baseband for unlock (ultrasn0w doesn't work with iOS 5 yet). This new version also adds hacktivation and removes UDID developer check. This means that you can try iOS 5 without developer account from Apple.
You can download Sn0wBreeze 2.8b7 for Windows here.
Sn0wBreeze is a quite useful jailbreak utility. It creates custom firmware and allows users to preserve baseband for unlock. This new version also adds hacktivation and removes UDID developer check. This means that you can try iOS 5 without developer account from Apple.
You can download Sn0wBreeze 2.8b6 for Windows here.
iH8Sn0w has released a new version of Sn0wBreeze 2.8 b3 with iOS 5.0b2 jailbreak support. Sn0wBreeze is a so-called PwnageTool for Windows, an application that creates a custom ipsw with jailbreak preserving old baseband.
The jailbreak is tethered for iPhone 4, iPhone 3GS (new bootrom), iPad, iPod Touch 3G and iPod Touch 4G. Jailbreak is untethered for iPhone 3GS with old bootrom.
Famous hacker Geohot is back and today he released the latest iOS 4.1 jailbreak. It is called LimeRa1n and supports iPhone 3GS, iPod Touch 3G, iPad, iPhone 4, iPod Touch 4G with iOS firmwares 4.0-4.1 and beyond. It can also hacktivate your device, so there is no need in phone SIM-cards and other tricks.
This software is still in beta and was updated 3 times in last several hours. So use with caution.
There is Windows version only for now. Geohot plans to release LimeRa1n for Mac and Linux soon. You can Download it here.
Some users report that they have jailbroken their iOS 3.2.2 iPads successfully with limera1n, while others report that they tried, but failed.
Do not forget to backup.
For many users of iPhone 3GS and iPhone 4 with iOS 4.0.2 now there is a hope to perform jailbreak using LimeRa1n and unlock using ultrasn0w. We recommend NOT to do it if you have not saved your SHSH keys. You can try, but if something goes wrong without SHSH keys you'll have to restore to iOS 4.1, and there is no unlock for iOS 4.1 (possibly forever). Just wait for PwnageTool utility.
DevTeam reported that Limera1n uses a different exploit than SHAtter, so they will not release SHAtter utility, they don't want let Apple fix both security holes. However they plan to release PwnageTool using the same exploit.
Run RedSn0w and point it at the 4.0 IPSW. (Yes – point it at the 4.0 IPSW even though you're at 4.0.2). This will also hacktivate your iPhone3G at 4.0.1 if you haven't already been activated by iTunes.
If you need a carrier unlock - install ultrasn0w in Cydia (add repository http://repo666.ultrasn0w.com). For T-Mobile in the USA remember to turn off 3G mode in Settings→General→Network.
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.
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)