Well, Nate from Dev Team has done it! A working jailbreak for .1.3 is finally here!!!This jailbreak, like the 1.1.2 jailbreak, comes as an upgrade. This means you need to have a 1.1.1 or 1.1.2 jailbroken iPhone already, before you can begin.Right now there’s only a Windows iBrickr-based version of the image creator but I’m hard at work on a Mac version, so expect it soon.
Here’s how you do it:
Props to everyone on the Dev Team, including (in no particular order): netkas, NerveGas, asap18, bgm, Bugout, bushing, chris_, dinopio, drudge, Fred_, gray, MuscleNerd, natetrue, pr3d4t0r, roxfan, Turbo, Zf[strike], np101137, pumpkin, and kroo, along with many contributors who wish to remain anonymous.And props to Fred_ and planetbeing, who were among the first with a 1.1.3 jailbroken iphone, and Zibri, by whom this method was largely developed. Additionally to Shaun Erickson, who packaged the Installer half of the upgrade, and runs most of the application packaging for the iPhone. He’s looking for a job too – hire him! Now you may be wondering how this jailbreak works. Here’s a breakdown:- iBrickr grabs the 1.1.3 iPhone firmware image and extracts, decrypts, and decompresses the disk image.
– Then it applies a patch, jailbreaking the disk image and activating it, and also installing Installer.app.
– It uploads this new modified image to the phone, as 113_upgrade_image.bin.
– The “1.1.3 soft upgrade” app flashes the phone with the image and reboots.
– You have a perfect, jailbroken, upgraded 1.1.3 iphone, with all your settings and music intact!source: cre.ations.net