At this point, be sure your phone is switched off and now connected to your computer via USB.ħ. You only need this if you need to unlock your iPhone using ultrasn0w after jailbreaking with redsn0w.Ħ. Select the options as shown below: Please note that the third option,”Install iPad baseband,” is optional. Redsn0w processes the firmware after which you must click the Next buttonĤ. ipsw firmware file you downloaded earlierģ. If you’re running Windows 7, be sure to run redsn0w as Administrator.Ģ. Extract the content of the zip folder and start Redsn0w. You done it before, haven’t you? 🙂 Now that you already have iOS 4.2.1 installed, lets get to the jailbreaking proper…ġ. – Go to iTunes, you should be notified that your phone firmwares needs to restored for it to work. – Hold down the home key and connect your phone to the computer. If you already have iOS 4.2.1 there, you can skip the upgrade but if it’s 4.1 or something lesser than that, follow these steps: Don’t know how to check your firmware version? Go to Settings > General > About > Scroll down till you see the version.
We’re jailbreaking your iPhone 3G with iOS 4.2.1 in this tutorial and if you’re running a lower version, you should connect your phone to iTunes to upgrade the firmware.
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