Redsn0w Unlock Iphone 4s

Updated on 2019-09-27 to Jailbreak

Redsn0w Iphone 4s
Redsn0w Unlock Iphone 4s Passcode
Redsn0w Unlock Iphone 4s Unlock
Redsn0w Unlock Iphone 4s Unlocked

Jailbreaking your iPhone with the redsn0w tool can free you from the chains of iTunes and the app store, but doing it can sometimes jam or freeze your iPhone. How can you get back to normal if the worst happens? What kinds of steps can you take to make sure your adventures in jailbreaking are safe and fun?

Jailbreaking is a method of subverting the standard firmware of your iOS device. You do this so you can more easily install non-Apple approved software not available on the Apple app store. Also, you can do things you are not normally allowed to do like change boot logos etc.

If you are going to jailbreak your iOS device, then redsn0w (note the zero in the name) was a good option. The tool was developed by one of the best iOS hacking teams, the iPhone Dev Team, and was one of the most stable and easy to use tools for jailbreaking. Although the project is no longer updated as far as we can tell, if you have an older iPhone and earlier iOS it still works well and many people still use it.

Part 1: How to Download Redsn0w 0.9.15b3

Download and restore iOS 4.2.1. Download iOS 4.2.1 for your device. This includes the iPhone 4S, iPhone 4, iPhone 3GS, and iPhone 3G models. An example of unlocking an iPhone through a Jailbreak utility would be Redsn0w. Through this software, iPhone users will be able to create a custom IPSW and unlock their device. Moreover, during the unlocking process, there are options to install Cydia the iPad baseband.

Before download RedSn0w, please check the compatible devices. Developer iPhone Dev-Team has stopped releasing update after 0.9.15 beta 3. On the other hand, they give up this tool once Apple introduced the 64-bit devices. So, if you want to use RedSn0w to jailbreak iPhone X, or search the answer of RedSn0w jailbreak iOS 12, the answer is no. RedSn0w is compatible with following generations of the iPhone, iPod Touch and iPad running firmware versions all the way back to iOS 3.

iPhone 4S: iOS 5.1.1, iOS 5.0.1, iOS 5.0
iPhone 4: iOS 6.0.1, iOS 6, iOS 5.1.1, iOS 5.1, iOS 5.0.1, iOS 5, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3, 4.2.6, 4.2.1, 4.1, 4.0.2, 4.0.1, 4.0, 3.1.3
iPhone 3GS: iOS 6.0.1, iOS 6, iOS 5.1.1, iOS 5.1, iOS 5.0.1, iOS 5, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3, 4.2.6, 4.2.1, 4.1, 4.0.2, 4.0.1, 4.0, 3.1.3
iPhone 3G: 4.2.1, 4.1, 4.0.2, 4.0.1, 4.0, 3.1.3
iPad 3: iOS 5.1.1
iPad 2: iOS 5.1.1, iOS 5.0.1
iPad 1: iOS 6, iOS 5.1.1, iOS 5.1, iOS 5.0.1, iOS 5, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3, 4.2.1, 3.2.2

Step 1. Before downloading Redsn0w, make sure that the iOS of your device is running 6.1.3.
Step 2. Download the latest version of Redsn0w 0.9.15 beta 3
Download Redsn0w Mac
Download Redsn0w Windows

Part 2: How to Jailbreak iPhone with RedSn0w?

The process of jailbreaking your phone with Redsn0w is quite simple. Ensure the device you are trying to Jailbreak is compatible and back up your iPhone before jailbreaking. Connecting your device to your computer through the USB cable and then simply clicking the Jailbreak button. RedSn0w provides on-screen instructions that will help you the whole way through.

Part 3: What if iPhone Gets Stuck During/After Jailbreaking with RedSn0w?

If the worst happens, iPhone unfortunately gets stuck on Recovery Mode, DFU mode, Apple logo, blue/black screen etc. due to jailbreaking with Redsn0w, our suggested solution is UltFone iOS System Repair, which will allow you to fix iPhone problems without data loss.

Also, if you want to remove jailbreak on iPhone/iPad, this software will unjailbreak without losing data.

Step 1 Download and install this iOS recovery tool to PC or Mac, and connect your iOS device to computer. Select 'Repair Operating System' function.
Step 2 Click 'Fix Now' in the next screen and you need to download the firmware package.
Step 3 After the firmware package is downloaded, please click 'Repair Now' to start repairing iPhone system. The process takes 10 minutes around.

You can also check this video to learn how to use iPhone system repair to fix iPhone stuck without data loss.

Conclusion

Hope you already know how to download RedSn0w and use it to jailbreak iPhone/iPad. If you are having a problem with your iPhone while using RedSn0w, UltFone iOS System Repair is recommended to help you fix various Redsn0W jailbreak problems without losing any of your data.

Fix 150+ iOS System Issues without Data Loss

1-click to enter/exit iOS recovery mode free
Fix 100+ iPhone update/restore errors.
Factory reset iPhone without passcode.
Support iPhone 11/11 Pro/XR/XS/X and iOS 14/13/12/11

In this guide you will learn how to jailbreak iOS 4.2.1iPhone 4, 3GS, 3G using RedSn0w on Windows. Just follow the step-by-step instruction to jailbreak iOS 4.2.1. See more jailbreak guides.

Important:

Tether jailbreak: iPhone 4, iPhone 3GS (new bootrom), iPod touch 2G (MC Model), iPod touch 3G, iPod touch 4G. Tethered jailbreak for newer models, means if you reboot the device then to boot back into jailbreak state you need to connect your device with computer and boot it using RedSn0w.
Untether Jailbreak: iPhone 3G, iPhone 3GS (old bootrom), iPod touch 2G (Non-MC)
Unlock for iOS 4.2.1 is not available yet so keep away from jailbreak if you need to unlock your device as well.

Step-1

Download and restore iOS 4.2.1

Download iOS 4.2.1 for your device.
Download Redsn0w.

Step-2

Run iTunes and select your device from left pane.

Step-3

Hold down the Shift key from keyboard and hit the Restore button.

Select the iOS 4.2.1 firmware ipsw file that you have downloaded and hit the Open button. Let the iTunes finish the update process.

Jailbreak iOS 4.2.1

Step-4

Extract the downloaded redsn0w_win_0.9.6b4.zip file and run redsn0w.exe file.

Redsn0w Iphone 4s

Step-5

Hit the “Browse” button and select the iOS 4.2.1 firmware ipsw.

Step-6

When IPSW successfully identified, hit the “Next” button and let the redsn0w prepare jailbreak data.

Step-7

Check the “Install Cydia” option and hit “Next”.

Step-8

Make sure your device is plugged into computer and Turned Off as well, hit the “Next” button.

Step-9

Now put your device into DFU mode, redsn0w will guide you to do that. Read the on screen steps to put your device into DFU mode.

Redsn0w will start jailbreak process, wait for the Done! message and then hit the Finish button.