Hack the iPhone

How to update your unlocked 1.1.2 iPhone, and make it function with 1.1.3 firmware and baseband (3.9 bootloader)

(PPC & intel Mac)

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I took my iPhone which was running 1.1.2 firmware and was unlocked (with anySIM 1.2.1u), and had a 3.9 bootloader and I updated it to run 1.1.3 firmware and 04.03.13_G baseband. This process took about 2 hours to complete.

Attention

You should read my Warning to all iPhone owners page before proceeding.

Step 1.

Plug in the iPhone to iTunes. Click update to install 1.1.3 firmware. Note: If newer firmware should come out at some point in the future, you will have to press Option and click Update to 1.1.3 firmware (which you will already need to have on your computer.)




Various messages will appear as this process continues.




When this has completed you'll see the edit home screen pop up on the iPhone.




The Welcome to your new iPhone screen will display in iTunes.

Step 2.

Now you need to downgrade to 1.1.1 firmware. Download the 1.1.1 firmware directly from Apple here. Do NOT allow your browser to decompress this file. When it is finished downloading you should have a file with a .ipsw extension. This is the firmware file.




Put the iPhone into DFU mode. Do this by pressing and holding both the Sleep/Wake button and the Home button for 10 seconds. At this point the screen will turn black, and the iPhone will appear to be off.




Let go of the Sleep/Wake button and continue to hold the Home button. In approximately 10 seconds iTunes will give an alert sound and a pop up will appear announcing that it has detected an iPhone in recovery mode.




Press the Option key and click the Restore button in iTunes.




A file browser window will open. Navigate to where you downloaded the 1.1.1 .ipsw file earlier. Select that file in the window and click Open.




iTunes will now restore this firmware to the iPhone. Once it has completed you will get an error message. Dismiss it.




You will also get this message.




In iTunes, eject the iPhone and then close iTunes.




Your iPhone should now be displaying a connect to iTunes graphic.









The iPhone is in recovery mode. You must exit recovery mode. Before you continue, make sure iTunes Helper is not running. To do this, go to your Mac's Applications folder, then into the Utilities folder, and you'll find a program called Activity Monitor here. Launch it. At the top there is a drop down box. Make sure My Processes is selected. Now look below for iTunes Helper. Select it and click on Quit Process at the top.




At the pop up that appears, select Force Quit. You can close Activity Monitor now. iTunes Helper will not respawn until your computer is restarted.





Download the program iNdependence here. With your iPhone still connected to your computer, launch iNdependence to kick the iPhone out of recovery mode. iNdependence will most likely do nothing and display the following. This is normal when downgrading 1.1.3 firmware.




At this point restore to 1.1.1 firmware again. When you are done, launch iNdependence again. This time it will work and you will see this status.




This is the screen you should now see on the iPhone. You are now out of recovery mode. You may get a message about an incorrect SIM in the iPhone.