How to unlock iPhone 3GS on iOS 4.0 with Blacksn0w RC2


How to unlock iPhone 3GS on iOS 4.0 with Blacksn0w RC2

The following guide is here to teach you how to unlock the iPhone 3GS, running on iOS 4.0, formally known as iPhone OS 4.0. This process will be realized using the Blacksn0w RC2 tool, just released by Geohot, enabling you access to any carrier. This unofficial tool works for the iPhone 3GS with the old bootrom and the 05.11.07 baseband. It also works for any firmware no bigger than 4.0.

The following procedure has been tested and found working. It successfully unlocks the iPhone 3GS on iOS 4 but, it has a little catch. Every time you will reboot, it will take approximately 90 seconds for the phone to catch the carrier signal. Before you start, we must remind you that we cannot be held responsible if you end up with a damaged / bricked phone. It is your responsibility to follow the steps as presented, and only if you are an advanced user. Otherwise, we recommend waiting for the official unlock tool, which will be launched after a couple of weeks.

Blacksn0w RC2 for iPhone 4.0

How to unlock the iPhone 3GS with iOS 4 using Blacksn0w RC2
  1. First, you need to jailbreak the iPhone 3GS on iOS 4.0.

  2. Start Cydia and touch on the “Manage” tab, located at the bottom of the screen. Now touch on “Sources”.

    Step 2

  3. You should see an “Edit” button. Touch it and then press on “Add”. Type “” in the box and then press on “Add source”.

  4. After a series of automated process, search for “blacksn0w RC2 for iOS 4” in Cydia and install it. This will automatically unlock the iPhone 3GS.

    Step 4

  5. All you have to do now is restart the iPhone. This will take about 90 seconds for the phone to catch a carrier signal. Congratz .

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