Updated to R7 to support iOS 6
iREB for Mac OS X Released
iREB R7 3.1.3/4.0.x/4.1/4.2.1/4.3/4.3.1/4.3.2/4.3.3/4.3.4/4.3.5/5.0/5.0.1/5.1.1/6/6.0.1/6.1/6.1.1/6.1.2 is a tool for Windows that will put your device into a pwned state so that you can upload custom firmware to it. Download iREB r7, to fix iTunes 1600, 1601, 1602, 1603, 1604 errors when you use custom firmware. its support all new & old devices.
Mirror Links Added
There is a simple way to update to iOS 5.0.1 without basebande update . easy unlock and jailbreak . Its a untethered jailbreak for all device except iPad 2 and iPhone 4s. This iOS 5.0.1 custom firmware made with Sn0wbreeze v2.9.3 so its an untethered jailbreak .There is same ready custom firmwares with 6.15.00 basebond . if you get iTunes 16XX error use iREB.