Another popular jailbreaking utility for Windows Sn0wbreeze got updated to v 1.6.1 supporting the latest iOS4 release, if you are thinking why Sn0wbreeze is needed when we already have redsn0w to jailbreak the newest Apple mobile OS - the answer is Sn0wbreeze lets you create custom firmware IPSW files on Windows (similar to iPhone Dev Team's - PwnageTool utility For Mac) letting you upgrade your devices keeping the older bootrom.

Apple iOS4 is finally out and so does the jailbreaking and unlocking utilities, the iPhone Dev Team has posted updates to their iPhone Jailbreaking utility redsn0w and carrier unlock ultrasn0w to support the newest iOS version with latest baseband (05.13.04) - this means that users can now safely update their iDevices to current iOS version without worrying about loosing there unlock and jailbreak ability.