How to Unlock iPhone 4 with UltraSn0w (Baseband 01.59.00) [del.icio.us]

On 08.06.10, In How To, iPhone, by admin

T-Mobile USA users please disable 3G network first.
Settings >General >Network and turn the “Enable 3G” switch to OFF.

Assuming that your iPhone 4 is already jailbroken:

Open the Cydia.Go to manage Tab at bottom.Hit the big Sources button.

Hit the Edit button on Top-RightThen Hit the Add button on Top-LeftThen Enter the following URL: http://repo666.ultrasn0w.com and hit the Add Source button.

Once the Source is added to the Cydia, hit the big return to Cydia button at bottom of the screen and then Done button.Go to Search tab and search for ultrasn0w and install it.

Installing UltraSn0w will unlock iPhone 4 iOS 4.0.1, 4.0 with baseband 01.59.00. Once the installation is completed, reboot your iPhone 4.
Voila! You have unlocked iPhone 4 baseband 01.59.00 with UltraSn0w 1.0-1 and can use SIM from any carrier now.

or

You can download iOS 4.0.1 firmware (IPSW files) for iPhone 4, iPhone 3GS and iPhone 3G from the links below

Download iTunes 9.2

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