Note: This is only for iphone 3G users who running iphone OS 3.1.3 , baseband 5.12.01 with 05.08 bootloader.
Here's a Step by Step guide
Step 1: 1st of all jailbreak your iphone 3G running firmware 3.1.3 with these tools.
sn0wbreeze v1.5, Redsn0w 0.9.4 or PwnageTool 3.1.5
Step 2: After jailbreak your iphone 3G, Now go to "Cydia" on your iphone and search for "Fuzzyband" and install this application.
Step 3: Start "Fuzzyband" and touch on "Downgrade" button for downgrade your baseband 5.12.01 to 04.26.08.
Step 4: After downgrade your Baseband now you can unlock your iphone 3G using the Ultrasn0w for that Click here and read complete guide.
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Related Topics
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Unlock Your iphone 3.13 With Ultrasn0w.
Jailbreak Your iphone 3.1.3 with Sn0wbreeze.
iPhone 3.1.3 Custom restore Errors fix 1604 1602 1603.


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