How Can I Unlock My iPhone 3GS 4.1 Firmware?
Before unlocking iphone 3GS 4.1 firmware you make sure that your iphone has jailbroken. Since the tool, pwnage to jailbreak your iphone has released in the market, you can use it for jailbreaking.
Following steps to unlock iphone 3GS 4.1 firmware.
- Initially jailbreak your iphone 3GS (if not jailbroken already).
- Launch “cydia” application.
- Select “Manage” tab at bottom
- Now select “Sources” option.
- Press “Edit” button and then press “Add” button.
- Now add this source “http://repo666.ultrasn0w.com”

- Once source is added look for “ultrasnow 1.1-1” in cydia application.
- Install this application “ultrasnow1.1-1” to unlock your iphone 3GS 4.1 firmware

- Finally you are done.
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