The iPhone Dev Team has just released an updated version of UltraSn0w 1.2.3,
which support iPhone 3GS & iPhone 4 with the following baseband (04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00, and 01.59.00). Today’s release is only for iPhone 3GS & iPhone 4 users. If you are a iPhone 4 users with newer baseband, you will have to wait a little longer (unfortunately there is no ETA on it). But, we will keep you posted..
If you haven’t jailbroken your iPhone 4 & iPhone 3GS, follow these links – RedSn0w 0.9.6RC15 / PwnageTool 4.3.3
How To Unlock iPhone 4 & iPhone 3GS On iOS 4.3.3 Using Ultrasn0w 1.2.3
Step 1: Launch Cydia
Step 2: Tap on Manage & Tap on Sources
Step 3: Tap on Edit and the Tap on Add
Step 4: Now, in the field add the following repo
http://repo666.ultrasn0w.comStep 5: Now, tap on AddSource and then Tap on Done
Note: in ultrasn0w its a Zero not a o
Step 6: Now, Tap on the added source “repo666.ultrasn0w.com”
Step 7: Now, look for ultrasn0w 1.2.2 and select it.
Step 8: Now, Tap on Install and then confirm to complete the installation.
There you have it!