iH8Snow jailbreak team have released an update to iREB tool, which offered support for iOS 6.1.2. The latest version iREB R7 for Windows brings multiple new improvements and support for iTunes error fixes. It fixes iTunes error (1015, 1600, 1601, 1602, 1603, 1604) and successfully completes restoring process of iOS 6.1.2.
iREB tool is basically for Windows users, to resolve iTunes errors at the time of recovery on custom firmware with the help of Snowbreeze or Pwnagetool.
iREB R7 supports A4 devices which includes iPhone 2G, iPhone 3G, iPhone 3GS, iPhone 4, iPhone 3GS, iPod Touch 2G, iPod Touch 3G, iPod Touch 4, iPad and Apple TV 2. iOS devices running on an A5 or A6 processor is not supported by iREB R7.