iREB is a tool for Windows that puts your iDevice into a pwned state so that you can upload custom firmware to it.
iH8sn0w has released its RC3 version. This version is suitable for removing errors like 1600, 1601 and 1604. It can be used to custom jailbroken iOS 4.2.1. It puts your device into jailbreakable state.
iREB RC3 can also fix Waiting for iBSS bug with iPhone 3G. This version is also compatible with Verizon iPhone 4.
Devices Supported by iREB RC3
• iPhone 4
• iPhone 3GS (old & new bootrom)
• iPhone 3G
• iPhone 2G
• iPod Touch 4
• iPod Touch 3G
• iPod Touch 2G (MB & MC)
• iPod Touch 1G
• iPad
• Apple TV 2
Download iREB RC3 for Windows.