Preserve Baseband & Untethered Jailbreak iOS 5.0.1 On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1 [Windows/Mac Guide]

by Jawwad in Guides, iPhone, Mobile | 11 comments


ios 5.0.12 thumb | Preserve Baseband & Untethered Jailbreak iOS 5.0.1 On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1 [Windows/Mac Guide]

As mentioned in our previous guide today, untethered jailbreak for iOS 5.0.1 is finally available for Apple A4 based devices, and we have already posted a step-by-step guide to jailbreak iOS 5.0.1 on iPhone 4, iPhone 3GS, iPad1 and iPod Touch. But that guide is not suitable for the users that want to preserve the baseband on their phone to get a future unlock using a tool like Ultrasn0w after the jailbreak. So here is the guide to provide a step-by-step approach to get Untethered Jailbreak iOS 5.0.1 & Preserve Baseband On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1. This guide is valid for both Windows and Mac. This is because in the more recent versions of the Redsn0w iPhone Dev-Team has integrated the baseband preservation functionality and hence technically this functionality is almost same that users got on PwnageTool. But PwnageTool was and still is ONLY available for Mac. And Windows users earlier had to use the Sn0wbreeze tool get the same functionality. But no more!

For now Redsn0w can be used to get fully untethered jailbreak for all Apple A4 based devices ONLY. That’s the reason that recently released iPhone 4S and iPad 2 are NOT mentioned above in this list of supported devices that can get untethered jailbreak on iOS 5.0.1. Current version of the Redsn0w will only work with the iOS 5.0.1 and NOT iOS 5.0 which should be supported in a future Redsn0w version.

Follow this simple guide to jailbreak your iPhone 4, iPhone 4 CDMA, iPhone 3GS on iOS 5.0.1 while preserving the baseband of the device. Note that this method will not work for the more recent Apple A5 based dual-core devices –iPhone 4S and iPad 2!

Warning: Rooting, Jailbreaking or customizing your device can be risky, and you may end-up bricking your device! Follow the instructions posted here at your own responsibility as Inspired Geek will not be responsible for any damage to your device.

Now follow these instructions:

Programs required:

Step 1: Download the Redsn0w and save it to the desktop. Extract the Redsn0w application there in a folder on the desktop.

Step 2: Execute RedSn0w application from the folder where it was extracted earlier.
Step 3: Once RedSn0w appears on-screen click the “Extras” button.

image12 thumb | Preserve Baseband & Untethered Jailbreak iOS 5.0.1 On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1 [Windows/Mac Guide]

Step 4: Click on the “Custom IPSW” on the Next screen.

image16 | Preserve Baseband & Untethered Jailbreak iOS 5.0.1 On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1 [Windows/Mac Guide]
Step 5: Now in the Open dialogue navigate to the Desktop where you have saved the stock firmware that you downloaded earlier and click on the Open button.
Step 6: RedSn0w will now prepare the custom firmware for your specific iDevice. Please note that Redsn0w will create a custom firmware in the same folder where you have the stock iOS 5 firmware that you download earlier. But your custom firmware name will begin with NO_BB_ IPSW.

Step 7: You will be notified when the custom IPSW firmware is ready. Click OK on the notification dialogue that appears.

Step 8: Now click on the “Pwned DFU” button from the Extras menu.

image17 | Preserve Baseband & Untethered Jailbreak iOS 5.0.1 On iPhone 4/3GS, iPhone 4 CDMA Using Redsn0w 0.9.10b1 [Windows/Mac Guide]

Step 9: Make sure that your device is powered-off and connect it to your computer before proceeding any further.

Step 10: Redsn0w will now guide you through a number of steps to enter the Pwned DFU mode.

Step 11: Redsn0w will now run the LimeRa1n exploit.

Step 12:  You will be notified when phone enters the Pwned DFU mode. In this mode your iDevice can accept custom firmware installation from iTunes.

Step 13: After your device enters the Pwned DFU mode now launch the iTunes and navigate to the iPhone tab and press SHIFT (Option on Mac) and then with the SHIFT (Option on Mac) pressed click on the on the “Restore” button. Now a new dialog will popup from this navigate to the place where the custom iOS 5.0.1 firmware that we created in the previous step is stored and then Select it. Be careful you need to select the custom iOS 5 firmware that was cooked using the Redsn0w and starts with “NO_BB”!

Step 14: After selecting the new custom firmware iTunes will begin installing/restoring the iOS 5.0.1 but with the critical feature that the old baseband will be preserved.

Step 15: Congrats. You have jailbroken your iPhone 4, iPhone 4 CDMA, iPhone 3GS on iOS 5.0.1 while preserving the baseband of the device.

Now to unlock your iPhone on iOS 5.0.1 follow our guide that we posted earlier:

If you are not concerned about preserving the baseband of your iDevice then please follow our guide that we posted earlier today:

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  • Martin

    After I am done restoring using the custom IPSW file and preserving my baseband, how do I get Cydia on my iPhone 4?

    • fix_a_fix

      Simply restart redsn0w, plug your phone in, put it in DFU mode and press Jailbreak. :-)

  • Martin

    Actually, how do I activate iOS 5 with a T-Mobile SIM? It’s not letting me :(

  • Pingback: Anonymous

  • Using the windows instruction

    After following the instruction iPhone 4 no cydia logo found after rebooting. How do I get cydia logo. I have used custom ipsw and preserving baseband. Is this method untethered. Please make your instructions clearer for windows user.

    • Martin

      I actually figured out a way to do this, but it doesn’t use any method found in this post. It’s basically backtracking to a tethered jailbreak and ‘upgrading’ to the untether. Simply untethering it to begin with just doesn’t work for me. No Cydia :(

      This method requires an AT&T SIM, working or not, and cut, sn0wbreeze (version below), iBooty, the latest iTunes, and the iOS 5.0.1 stock IPSW.

      1. Download sn0wbreeze v2.8b11 – this lets you preserve baseband with any modes so you don’t have to worry about losing your unlock, and this is TETHERED, but keep reading.

      2. Download iBooty, I tried booting with redsn0w, but it just doesn’t help the Cydia run like iBooty.

      3. Download the latest iTunes & the stock iOS 5.0.1 IPSW

      4. Open sn0wbreeze and select the stock IPSW and use whichever mode you would like; hover over each to see its features. Personally, I would use simple if I want the jailbreak w/ Cydia and basic stuff.

      5. Wait for it to build and continue to follow what’s on the screen: putting it into DFU mode and then allowing sn0wbreeze to run iREB on your device.

      6. Open iTunes and shift + restore and select the IPSW that you created earlier with sn0wbreeze, it begins with ‘sn0wbreeze’ (go figure) and is probably on your desktop. BE SURE NOT TO SELECT THE STOCK.

      7. Let iTunes restore, and if you come up with an error, Google it unless it’s a 16xx error, then just run iREB, also found on Google.

      8. After it is done restoring, you will need a random cut AT&T to activate because I have no idea how to hacktivate.

      9. After everything is set up on your iPhone, reboot using iBooty, redsn0w doesn’t seem to suffice in my case. You can try, but if Cydia doesn’t run, then use iBooty.

      10. After iBooty reboots your device, check to see if your device can open Cydia, if it can, then you’re almost home free.

      11. Search ‘Corona untether’ and something like that with ’5.0.1′ should pop up (Corona untether 5.0.1 or something) and install it, and voila! You have an untether!

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