Unlock iPhone 3G S

Note:Be sure to back up your data

A.purplesn0w:
1.Be sure to have legit activated iphone 3G S
2.Disable 3G if you don't have
2.Add apt.geohot.com to cydia
3.Install com.geohot.purplesn0w
4.Reboot

B.purplera1n:
Download application for jailbreak

windows mac

C.Redsnow:
1.Download the Apple iphone 3GS firmware

First Second

2.Extract files into common folder
3.Open Redsnow to jail break
4.Open Cydia and add repo repo666.ultrasn0w.com (Having trouble installing cydia? Let Pwnage Tool install it)
5.Search for ultrasn0w and install

D.Ultrasnow:

1.Upgrade iphone OS 3.0
2.Jailbreak using Redsn0w (previous)
3.Add repo repo666.ultrasn0w.com
4.Search for ultrasn0w and install
5.Reboot