PwnageTool 4.1 has been released. You can use it to cook custom firmware files without the upgraded (2.10.4 / 05.14.02) baseband for iPhone 4, 3GS and iPhone 3G running on iOS 4.1 so that you can unlock it using the existing version of Ultrasn0w. This version of PwnageTool also supports hacktivation.

The iPhone Dev Team has finally released PwnageTool 4.1 which is based on recently released Geohot’s bootrom-based Limera1n exploit. This exploit enables this new version of PwnageTool to build custom firmware files for A4 devices like iPhone 4, iPad, Apple TV 2G and iPod touch 4G which was something, previously not possible.

The iPhone Dev Team has finally teased us with a screenshot of the upcoming PwnageTool 4.1 for all iOS devices. This new version of PwnageTool is based on Geohot’s Limera1n bootrom exploit which will allow us to restore custom cooked firmwares (without the upgraded 05.14.04 / 2.10.4 basebands) on almost all the current iOS devices, including: iPhone 4, iPhone 3GS (new bootrom), iPhone 3G, Apple TV, iPad and iPod touch 4G / 3G / 2G. This will enable all iPhone users to unlock using the current version of Ultrasn0w so that they can use the phone on any carrier they like!

MuscleNerd of iPhone Dev Team has teased a little video which shows off the upcoming PwnageTool in action. This new version of PwnageTool is based on Geohot’s Limera1n bootrom exploit which will allow us to restore custom cooked firmwares (without the upgraded 05.14.04 / 2.10.4 basebands) on almost all the current iOS devices, including: iPhone 4, iPhone 3GS (new bootrom), Apple TV, iPad and iPod touch 4G / 3G.

George Hotz’ dramatic re-entry into the iOS jailbreaking scene has left many surprised, and certain people shattered (pun intended). In the hailstorm of all this iOS 4.1 jailbreaking news, jailbreak developer iH8Sn0w has announced that he will be releasing a new version of Sn0wbreeze for Windows (similar to PwnageTool for Mac) which will be based on Limera1n’s bootrom exploit.

Sn0wbreeze 2.0 is out! Just like PwnageTool for Mac, you can now cook custom firmwares of iOS 4.1 on Windows without upgrading the baseband, which ultimately means that you can use ultrasn0w unlock software to unlock your phone on the older baseband.

iPhone 3GS (old bootrom only) has been jailbroken successfully on iOS 4.0.2 (custom firmware) using the upcoming Sn0wbreeze 2.0 for Windows. For those of you who don’t know, Sn0wbreeze 2.0 has been developed by the same iPhone developer / hacker which has previously released sn0wbreeze for 3.1.3, sn0wbreeze for 4.0, f0recast and BlackBreeze.

There is now an unofficial version of PwnageTool out in the wild which can jailbreak iPhone 3GS (with old bootrom and already pwned on 3.1.2) on the latest iOS 4.0.1 firmware. The creators of the original PwnageTool has confirmed that this version has been modified and redistributed without their permission, and most importantly, it doesn’t patches some important files which are required for the ultrasn0w unlock to work properly.

Some of you might have noticed the annoying 1604, 1600 error when restoring to iOS 4 custom firmware in iTunes which is built using PwnageTool 4.0 or 4.01. The error in question looks something on the lines of this.

I have got loads of emails and queries via comments on the posts here and here where many of you have been asking on how to fix 1604, 1603, 1602, 1601, 1600 error in iTunes during firmware restore. This error is occurred when you are trying to restore your jailbroken custom iPhone 3.1.3 .ipsw file which you cooked using either PwnageTool or sn0wbreeze.

The infamous iPhone Dev-Team has updated its PwnageTool for Mac to make it compatible with the new iPhone 3.1.2 firmware which was released last week. This latest version of PwnageTool can jailbreak the original iPhone (Edge), iPhone 3G, iPhone 3GS and iPod touch (1G and 2G) running on iPhone firmware 3.1.2. Follow the step-by-step instructions below to jailbreak your iPhone with firmware 3.1.2.