How to do an untethered 4.2.8 or 4.3.3 jailbreak with Sn0wbreeze 2.7.3 [Tutorial]
@ih8sn0w has released a new version of his custom firmware tool Sn0wbreeze 2.7.3 for performing an untethered jailbreak on the latest iOS firmware 4.3.3 and 4.2.8 for Verizon CDMA iPhone4 users. The tutorial below will create a custom firmware for you to restore in Windows.
Step 1: Open sn0wbreeze and click the blue arrow. At this screen you will select the 4.3.3 or 4.2.8 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 tutorial 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. *IMPORTANT* If you have an unofficial carrier make sure you check the option that says "Activate the iPhone" you need to do this if you have an unofficial SIM or you won't be able to access your phone.
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.
Error 1600 or 1013 error using sn0wbreeze 2.7?
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:
If the error is being caused by your device not being in Pwned-DFU mode, you can download the standalone version of iReb 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.