Jailbreak Unlock iPhone iPod iPad Free

update
Today Greenpois0n released for windows. I know there is somebody have Have hackvision or lock iPhone and want iOS 4.2.1 untethered jailbreak. There is the solution.

iPhone 3G :
1- if your baseband is 05.13.04 or lower simply use iOS 4.2.1 Custom Firmware without Baseband update
2- if your baseband is later than 05.13.04 use Custom Firmwares for Unlocking 06.15.00 Basebond iPhone 3G/3Gs

iPhone 3Gs :
1- if your baseband is 05.13.04 or lower simply

1-a use iOS 4.2.1 Custom Firmware without Baseband update then jailbreak with Greenpois0n RC5
1-b Use Sn0wbreeze v2.2 or Pwnagetool v4.2 to build your own custom firmwares with untethered jailbreak
2- if your baseband is later than 05.13.04 use Custom Firmwares for Unlocking 06.15.00 Basebond iPhone 3G/3Gs then jailbreak with Greenpois0n RC5

iPhone 4 :

1- if your baseband is 01.59.00
1-a Prevent iPhone4 Baseband Update using TinyUmbrella
1-b Use Sn0wbreeze v2.2 or Pwnagetool v4.2 to build your own custom firmwares with untethered jailbreak
2- if your baseband is not 01.59.00 you have to wait for next Ultrasn0w version.

PS1 : If you see 16XX error boot in custom mod using Redsn0w then restore with custom firmware.
PS2 : After all simply unlock with Ultrasn0w.

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