After the Mac version, redsn0w 0.9.8b1 landed on itd Windows to jailbreak iOS 5 beta 1. There is no difference with the Mac version. The Dev Team explains that since Apple gives users access to Windows version 10.5 beta of iTunes, everyone (read developers) can install iOS 5 beta 1. Be careful though, it is worth remembering that the jailbreak using the exploit of bootrom Geohot "Limera1n" and it is mainly tethered. You will need a computer each time you restart the machine.
