Apple has released the iOS 4.1 final iPhone and iPod Touch and is available for download. The iOS 4.1 firmware comes
up with new features like the HDR photography on the iPhone 4, Game Center, HD Youtube video uploading, MobileMe in iPhone 4 and iPod Touch 4G etc. You could update your iPhone 3G/3GS/4 or iPod Touch 2G/3G to iOS 4.1 using iTunes.
But if you still want your jailbreak and unlock on your device, then don’t update to this iOS 4.1 firmware. You could download iOS 4.1 IPSW files from the below given diretct download links by Apple.