PwnageTool 4.01 has already been released to jailbreak iOS 4 on iPhone and iPod Touch. I have also provided an easy guide to make use of this new jailbreak tool on your iDevice.

If you upgrade the jailbroken and carrier unlocked iPhone to Apple’s new iOS 4 firmware, it will get locked permanently. To solve the problem of iOS 4 unlock, iPhone Dev team has released Ultrasn0w 0.93.

For those who don’t know, the ultrasn0w 0.93 supports new baseband i.e. 05.13.04. Now, there is no need to worry about baseband issues. Jailbreak your iPhone 3G or iPhone 3GS using PwnageTool 4.01 guide and unlock it with ultrans0w 0.93.

Guide to unlock iPhone 3G/3GS iOS 4 with Ultrasn0w 0.93

Requirements:

• Jailbroken iPhone 3G or iPhone 3GS
• Cydia

Steps to follow:

1. Open ‘Cydia’ tool on iPhone and select ‘Manage’. Go to ‘Sources’.

2. Select ‘Edit’.

3. Add following URL to repo directory.

Repo: repo666.ultrasn0w.com

4. Now, search for Ultrasn0w 0.93 in Cydia and install it on the phone.

5. Ultrasn0w 0.93 will unlock your iPhone running iOS 4.

6. Reboot the iPhone.

Hurray! Your iPhone is unlocked successfully.

I am sure every one of you are now waiting for iPhone 3GS unlocking guide. Well, it’s very simple to unlock iPhone 3GS with the help of ultrasnow tool.

If you are not aware of ultrasnow technique then you can follow the guide given below. Please go through all the instructions given by dev team and do not make any mistake while performing unlocking on your iPhone 3GS.

Guide to Unlock iPhone 3GS OS 3.1 with Ultrasnow

Requirements:

Jailbroken iPhone 3GS

Steps to unlock iPhone 3GS:

1. Launch Cydia from Springboard.

2. Select ‘Manage’ option and open ‘Sources’.

3. Select ‘Edit’ button and then select ‘Add’ button.

4. Add http://repo666.ultrasn0w.com/ repository in the given field.

5. Select ‘Return to Cydia’ and then press ‘Done’ option.

6. Now, open UltrasnOw repo and select ‘Install’ button.

7. Once again, press ‘Return to Cydia’ button.

8. Restart your iPhone 3GS.

Your iPhone 3GS is now unlocked and can be used on any carrier.

Read our useful guides:

• Guide to Jailbreak iPhone 3G OS 3.1 with PwnageTool 3.1
• Guide to Unlock iPhone 3G OS 3.1 with ultrasnOw
• Guide to Jailbreak and Unlock iPhone 2G with PwnageTool 3.1