If for some reason you don’t want to use to jailbreak your iOS 5, here is a good alternative utility – Sn0wBreeze 2.8b8. It can perform a tethered jailbreak for iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G and iPod Touch 4G.
As usual it will preserve your baseband (modem) version for unlock with or Gevey Sim.
You can download Sn0wBreeze 2.8b8 .
UPDATE: Sn0wBreeze 2.8b8 step-by-step jailbreak and unlock tutorials:
Sn0wbreeze, the famous tool for Windows, will be released towards the end of this week. Sn0wbreeze is the software that will allow users to create custom firmwares to use for jailbreak and unlock. Now this functionality is available for Mac OS usera with PwnageTool.
iH8sn0w has just released a new teaser video showing Sn0wbreeze, application for Windows that would basically be a clone of PwnageTool, equipped with the ability to create custom firmware and unlock the various devices.
Many users believe that Sn0wbreeze is just “fake,”.. Hopefully iH8sn0w did found an exploit and will finish Sn0wbreeze soon.