Download Custom Firmware iOS 4.1 for iPhone 3GS [Windows/Mac]

Update : The latest version of┬áRedsn0w (Windows) can enable that tricky DFU mode on Windows! Macs can use the Pwnage tool to create the custom firmware itself… Warning : This isn’t for the faint of heart. I did not post a detailed writeup cos’ DFU mode is kinda tricky on this one. If you know…