ih8sn0w has released the iREB 4.1 version for Windows and Mac OS X to overcome errors like 1604, 1601, 1600 etc while restoring to custom jailbroken iOS 4.1 firmware. iREB helps you to enter your iPhone into a jailbreakable state, thus helping to bypass errors lie 1604, 1600 etc.
The devices supported by iREB 4.1 are the following :
- iPhone 2G/3G/3G[S]/4
- iPod Touch 1G/2G/3G/4
- Apple TV 2
Download iREB 4.1 for Windows or Mac OS X from here.