Please make sure your iDevice is in KDFU mode, then continue to downgrade. Only when your iDevice is in KDFU mode, you can downgrade to iOS 6.1.3. Step 1 Launch Cydia and add repo: to enter KDFU mode (Please check the detailed tutorial). You are suggested to backup your device before you downgrade. This downloading would not save any data. You can check the product type of your device on 3uTools, then download the corresponding firmware. This downgrading tutorial only applies to iPhone 4s and iPad 2 (Product type: iPad2.1, iPad 2.2, iPad 2.3 and iPad 2.4). Jailbreak your iDevice: Please update your iDevice to iOS 9.3.5 to jailbreak.Ĥ. Download the corresponding custom firmware for your iDevice Download and install the latest version of 3uTools.Ģ. You can follow us on Google Plus, Twitter ( Facebook ( iPhoneHeatDotCom), and Subscribe to RSS Feed to receive latest updates.Now V2.17 3uTools supports downgrading iPhone 4s and iPad 2 to iOS 6.1.3 after jailbreak without SHSH.Īfter you downgrade to iOS 6.1.3, you can check iOS software update on your iDevice to upgrade to iOS 8.4.1.ġ. Stock firmware will update your baseband and you will loose your unlock.ĭon’t forget to hit the +1, Like and/or Tweet button if you like the post. BE VERY CAREFUL to NOT ACCIDENTLY USE THE STOCK IPSW! select only the one beginning with NO_BB_*.
Warning: If you depend on UltraSn0w or Gevey SIM unlock, you want to preserve your iPhone baseband. Note: RedSn0w adds “NO_BB” to the name of the custom firmware so you may distinguish it from stock/original iOS firmware. You can find a new custom IPSW file in the same folder where your original (stock) IPSW file was located. Once the RedSn0w is done with building your desired custom firmware, a success window will appear. Now Redsn0w will begin creating custom IPSW firmware which may take some time. Note: If you’re creating a custom firmware for your iPhone 3GS, RedSn0w will warn you about iPad Baseband patch.
Now browse and select the targeted iOS firmware (IPSW file) for iPhone, iPad or iPod Touch Download iOS Firmware for iPhone, iPad and iPod Touch.Note: steps are same for both the Mac and Windows. These are the steps to create custom firmware IPSW file using redsn0w: Let’s create Custom iOS IPSW with RedSn0w… How to Create Custom Firmware IPSW with RedSn0w
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