iREB is a tool for Windows® that will put your device into a pwned state so that you can upload custom firmware to it.
Devices Supported
[LIST][*]iPhone 2G[*]iPhone 3G[*]iPhone 3G[S] (old & new bootrom)[*]iPhone 4[*]iPod Touch 1G[*]iPod Touch 2G (MB & MC)[*]iPod Touch 3G[*]iPod Touch 4[*]iPad[*]Apple TV 2[*]
Download iTunes 10.1 for Windows and Mac
4.1 ios custom firmware
The links are all interchangeable and you have all the mirrors you can ever think of! Use hj-split to join the files.
Activated iOS 4.1 Custom Firmware for iPhone 4 [Official iPhone carriers]
iPhone3,1_4,1_8B117_Custom_Restore_Activated_iLike MyiPhone.ipsw.001 (315 MB) iPhone3,1_4,1_8B117_Custom_Restore_Activated_iLike MyiPhone.ipsw.002 (275.27 MB)
Not-Activated iOS 4.1 Custom Firmware for iPhone 4 [T-Mobile,other non-iPhone carriers]
iPhone3,1_4,1_8B117_Custom_Restore_NotActivated_iL ikeMyiPhone.ipsw.001 (315 MB) iPhone3,1_4,1_8B117_Custom_Restore_NotActivated_iL ikeMyiPhone.ipsw.002 (275.04 MB)
Activated iOS 4.1 Custom Firmware for 3GS iPhone [Official iPhone carriers]
iPhone2,1_4.1_8B117_Custom_Restore_Activated_iLike MyiPhone.ipsw.001 (200 MB) iPhone2,1_4.1_8B117_Custom_Restore_Activated_iLike MyiPhone.ipsw.002 (178.21 MB)
Not-Activated iOS 4.1 Custom Firmware for 3GS iPhone [T-Mobile,other non-iPhone carriers]
iPhone2,1_4.1_8B117_Custom_Restore_NotActivated_iL ikeMyiPhone.ipsw.001 (200 MB) iPhone2,1_4.1_8B117_Custom_Restore_NotActivated_iL ikeMyiPhone.ipsw.002 (177.89 MB)