Jailbreak and unlock the iPhone 3G S and iPhone 4 - SIMULATED

Posted: December 30, 2011

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Who is this guide for?
  • iPhone 3G S owners with the following modem firmware: 04.26.08, 05.11.07, 05.12.01, 05.13.04, and 06.15.00; iPhone 4 GSM owners with 01.59.00 modem firmware. It doesn't matter what OS you are running.
  • I used OS X 10.7.2.
  • I used iTunes 10.5.2

Thanks again go out to the iPhone Dev Team for providing this amazing, and FREE program for customizing the iPhone. You can visit their blog here. You can read their notes regarding this jailbreak here, and the unlock here.

Note: This tutorial is simulated. Why do I consider it a simulation? Because I no longer have an iPhone with an unlockable modem firmware. I sold the one I had to get a factory unlocked iPhone so I don't have to mess around with unlocking any more.

I have adjusted the single screen shot on the second page to display 01.59.00 modem firmware to eliminate any visual confusion about what YOU are doing when you follow this tutorial.

Please read my disclaimer before proceeding. You've been advised. What you do to your iPhone is your responsibility and no one else's.

If you are unlocking your iPhone to use it with T-Mobile in the US, you might want to read this forum post over at MacRumors.net.

If you'd like to learn how this jailbreak was made possible, read pod2g's article here.






Step 1.

Download the 5.0.1 firmware file you need from Apple. See my firmware page here for links.



Step 2.

Download redsn0w 0.9.10b3 (or newer) here. Decompress the zip file and a folder will appear. Drag the application into your Mac's Applications folder. Overwrite any previous versions.

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Step 3.

Note: My screen shots of redsn0w do not display a version number at the top. This is so I don't have to take the screen shots over and over again. Just make sure you are on the version listed above (or newer) and everything will be fine.

Launch redsn0w. Click Extras.

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Click Custom IPSW.

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A file browser window will open. Navigate to where you saved your firmware file. Select it and click Open. Note: you must have an SHSH saved for this firmware.

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It will take a minute or so to create the modified firmware file. What it is doing is creating a version of this firmware that does not contain a modem firmware (baseband) update. This is critical to maintaining your unlock.

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You'll receive a pop up message when the firmware has been created and where it has been saved. It'll place it in the same location your original firmware file is. Never confuse these files! Do not mistakenly use the original firmware file to restore or you'll lose your unlock. Maybe you should delete the original file now that you have the new custom file?

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Click SHSH Blobs.

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Click Verify.

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Select the SHSH you want to use and click Open.

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The pop up must state that your APTicket is present and valid. Click OK.

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Click Stitch.

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Click IPSW.

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Select the firmware that was just created: "NO_BB_" Click Open.

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Click Local.

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Locate the SHSH you want to use that matches that firmware version. Click Open.

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A pop up will appear providing status.

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You'll receive a pop up message when the firmware has been created and where it has been saved. It'll place it in the same location your other firmware file(s). This file will begin with your iPhone's ECID number. You should probably delete the other firmware files so you don't confuse them. This firmware will allow you to restore your iPhone without updating your baseband, and it already has the SHSH and APTicket built in so it will be approved to be restored in the future.

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Click Back, then click Pwned DFU. It's time to restore your iPhone with this new custom firmware.

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Instructions for entering DFU mode will appear. They start right away and go very quickly so try to keep up! Note: I found that the timers didn't count in real time, so you may want to count yourself as you may not enter DFU mode.

Press and hold the on/off (sleep/wake) button for three seconds.

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While holding the on/off (sleep/wake) button, press and hold the home button.

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Release the on/off button, but keep holding the home button.

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You'll receive confirmation you are in DFU mode. Click Cancel.

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Click here to continue to page 2.




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