New version of iREB for all iOS 4.1 devices is now available for download. You can use it to bypass 1604, 1603, 1602, 1601, 1600 error in iTunes during custom iOS 4.1 firmware restore which has been created using either Sn0wbreeze or PwnageTool.

The guy behind Sn0wbreeze – the PwnageTool for Windows has just released a new tool dubbed f0recast for iPhone OS 3.1.3 firmware. This is a nifty little tool which enables iPhone 3GS, 3G, 2G and iPod touch 1G/2G/3G users to know all they need to know about unlocking and jailbreaking their iPhone and iPod touch.

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.

When trying to restore your iPhone or iPod touch in iTunes with iPhone 3.1 firmware, you may get an error message followed by an error code 1601, 1602, 16xx or 21. To get around this problem, iH8Sn0w has released a handy little tool called iREB (iTunes Restore Error Bypasser) for both Windows and Macs which can help bring your iPhone back to life. The latest version of this program supports iPhone 3.1 firmware running on the original iPhone, iPhone 3G and iPod touch 1G.