This comprehensive guide to unlocking the iPhone 3.1.3 with BlackSn0w or UltraSn0w will show you ways of unlocking baseband 04.26.08 or 05.11.07. If you have baseband 04.26.08 then you should use the UltraSn0w unlock method, and if you are using baseband 05.11.07 then you should use the BlackSn0w Unlock method. If you do not know your baseband version, find out how to check your baseband. This guide is for iPhone 3GS 3.1.3 and iPhone 3G 3.1.3 only. There is no unlock currently for baseband 05.12.01, but stay posted on the unlock page for updates.
Unlock iPhone 3.1.3 Baseband 05.11.07 with BlackSnow
Step 1: Launch the Cydia app from your iPhone. If there is no Cydia app, you will need to jailbreak your iPhone.
Step 2:Add this source to Cydia: http://blackra1n.com.
Step 3: After installing this source in Cydia, search for “BlackSn0w” and tap on it.
Step 4: Install the BlackSn0w unlock, restart your iPhone and enjoy your unlocked iPhone 3.1.3.
Unlock iPhone 3.1.3 Baseband 04.26.08 with UltraSn0w
Step 1: Launch the Cydia app from your iPhone. If there is no Cydia app, you will need to jailbreak your iPhone.
Step 2: Add this source to Cydia: repo666.ultrasn0w.com (with the number “0″ not the letter “o”).
Step 3: After installing this source in Cydia, search for “UltraSn0w” and tap on it.
Step 4: Install the UltraSn0w unlock, restart your iPhone and enjoy your unlocked iPhone 3.1.3.
If you run into problems, read over the directions carefully and try again, or leave a comment below for help.
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