Untethered 4.2.7 Jailbreak [Tutorial] with Sn0wbreeze 2.6.1

Well, fellow Verizon iPhone4 users, like myself, will be happy to know that you can now do an untetherd 4.2.7 jailbreak using the latest . ih8sn0w has updated his tool to support the latest Verizon iOS so you can now perform an 4.2.7 jailbreak. If you have used Redsn0w 0.9.6rc14 to perform a tethered jailbreak, you can use the 4.2.7 pushfix untether cydia pacakge to untether your jailbreak instead of doing a custom restore with a sn0wbreeze firmware.

After trying, pod2g's + posixninja's kernel exploit for 4.2.x is STILL in
4.2.7! After some more work, I managed to get this thing untethered! -ih8sn0w

Sn0wbreeze 2.6.1 - Win
iOS 4.2.7 Firmware

Step 1: Open sn0wbreeze and click the blue arrow. At this screen you will select the 4.2.7 firmware file you downloaded. You can either drag and drop the IPSW onto the box in sn0wbreeze or you can browse for the file.

Step 2: Once you have selected and verified your firmware file in Sn0wbreeze, you will see a green checkmark like the one below. Hit the blue next arrow to proceed to the next step.

Step 3: On the next screen you will select which mode you want to use. For this we will be using "Expert" mode:

Step 4: On the options screen you can enable any of the features you want, if you don't know what they mean just leave them as default and then click "Build IPSW" and hit next.

Step 5: While the firmware is being built, you can either play the Pac-Man game that ih8sn0w has built into sn0wbreeze or you can just sit back and wait until it is finished compiling and you see the screen below.

Step 6: You must now enter Pwned DFU mode in order to restore the custom firmware that was built. Follow the onscreen instructions or take a look at our DFU mode video tutorial if you are having issues.

Step 7: Now that you are in Pwned DFU mode and you have created your custom firmware with sn0wbreeze, all that's left to do is to do a shift+restore in iTunes and point it to the firmware you created with sn0wbreeze which should be on your desktop. Make sure you restore the CUSTOM firmware and not the factory firmware.

1600 or 1013 using sn0wbreeze 2.6.1?

If you get error 1600 or 1013 during your restore of your sn0wbreeze 2.6.1 firmware, this means one of two things. Either you aren't in Pwned-DFU mode or you are blocking Apple's verification servers in your hosts file. To fix the latter of these issues go to C:\Windows\System32\Drivers\etc and edit the HOSTS file with notepad. You have to either remove or comment out the line referring to gs.apple.com as seen below:

To comment out the line instead of deleting it just put a "#" in front of it. After you've done this, save the hosts file and then shift+restore your custom firmware.

If the error is being caused by your device not being in Pwned-DFU mode, you can download the standalone version of below to put your device into Pwned DFU mode:

iReb RC4 - Win

After running iReb you will get a confirmation that your device is in Pwned-DFU mode. Now try to shift+restore your custom firmware.

11 Responses to Untethered 4.2.7 Jailbreak [Tutorial] with Sn0wbreeze 2.6.1

  1. […] *UPDATE* There is now an untethered solution for jailbreaking 4.2.7. If you have already used the tutorial below to perform a tethered 4.2.7 jailbreak, you can use the pushfix 4.2.7 untether cydia package to untether your current jailbreak. Otherwise if you want to restore a pre-jailbroken 4.2.7 firmware you can check out our Sn0wbreeze 2.6.1 tutorial. […]

  2. Jay says:

    I downloaded everything, snowbreeze installed the new firmware, put in dfu mode, did Shift Restore in itunes, loaded the new snowbreeze firmware, it tries to restore it but then i get this error message “The iPhone “iPhone” could not be restored. An unknown error occurred (1600).” Now my iphone is stuck in DFU mode. what should i do?

    • JaeM1llz says:

      Unblock the apple activation server in your hosts file. Edit C:\Windows\System32\Drivers\etc\HOSTS and remove the gs.apple.com line and then put your device back into pwned-DFU mode and shift+restore the sn0wbreeze firmware

      • Jay says:

        there is no host folder…i get to C:\Windows\System32\Drivers\etc and in the etc folder there is a file called hosts and when i open it it asks what program to open it with and then gives me a list of programs to open it with

  3. Jay says:

    i dont have a gs.apple.com line when open it in notepad

    • Michael says:

      Try holding home and the power button when the iPhone boots up to get it out of DFU mode. This should take 10-20 seconds.

  4. Brandon4.2.7 says:

    okay…. So i tried to put it into dfu…. Now phone is just black and i cant turn it on at all. nothing happens when i hook it up with itunes. No sounds. No nothing. WTF!!!!!

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