Fix lỗi jailbreak ios 8.4.1 iphone 5 run uicache

V2.09 and later version of 3uTools supports iOS 10 - 10.2 jailbreak now.

Notice

1. Please backup your data with 3uTools before jailbreaking: What's Customized Backup & Customized Restore?

2. Apple has officially stopped signing iOS 10.2 and earlier iOS versions. So if you upgrade to iOS 10.2.1, you could not downgrade.

3. This jailbreak does not support iPhone 7 & iPhone 7 Plus running on iOS 10.2.

4.This is a Semi-Untethered Jailbreak.

①The jailbreak must be reactivated every time the iDevice is rebooted or turned off.

②The iDevice will run normally, but none of your tweaks will work. Please keep in mind that Cydia and any other jailbroken apps are still visible on the home screen, but they may probably crash on launch.

③To re-jailbreak your iDevice, just open the yalu102 app, and press "go," and wait for it to close to the home screen. If it gets expired while running yalu102, you are suggested reinstall yalu102 with 3uTools.

5. At present, AppSync is compatible with jailbroken iDevices with iOS 10 and later. However, 3uTools temporarily does not support installing the latest AppSync. If you want to install it, you can check this tutorial: How To Install AppSync On Jailbroken iDevice?

iDevice Compatibility List

The Yalu jailbreak is compatible with the following 64-bit iDevices:

iPad: iPad Air, iPad Air 2, iPad Pro, iPad mini 2, iPad mini 3, iPad mini 4;

iPhone: iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus , iPhone SE;

iPod touch: iPod touch 6

Operation Steps to Jailbreak

Step 1. Download and install V2.09 3uTools. Connect your iDevice to your PC and click “Flash & JB” → "Jailbreak".

Step 2. Now click “iOS 10 ~10.2 Jailbreak” on the right side. After that, yalu102 will be installed on the iDevice. Then following the prompts of 3uTools to complete jailbreak.

Step 3. You need to operate on your iDevice. Head to “Settings” → “General” → “Device Management”/ “Profile”, Find and click Apple ID.

Step 4. Please lauch yalu102 app on the home screen of your iDevice, and click “go”. After rebooting iDevice, you can see Cydia app on the screen, which means jailbreaking process is completed.

Step 5. If you fail after clicking “go”, or Cydia icon does not appear after rebooting, you need to make multiple tries until you succeed.

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Here’s how to downgrade iOS 9.3.5 to iOS 8.4.1 or 6.1.3 without SHSH blobs on any 32-bit device and then get untethered jailbreak on it.

Why you wanna do this? Well, if your older iPhone, iPad or iPod touch device is performing poorly on newer firmware versions, the next best thing to do is to get it back to an older firmware which were better optimized for those devices. So without further ado, let’s just jump right in and see the necessary steps that we need to go through to achieve this on a 32-bit device.

Step 1: First of all, you need to make sure that you indeed have a 32-bit device running iOS 9.3.5. This will only work under those conditions. You need to make sure that you are jailbroken on that firmware. For information on how to jailbreak your 32-bit device on iOS 9.3.5 using Phoenix, check out our guide here: Jailbreak iOS 9.3.5 32-Bit Devices With Phoenix IPA, Here’s How.

Step 2: Once you are sitting in the jailbroken state, you will need to ensure that you have iFile installed from Cydia. This is generally a staple installation for most jailbreakers, but if it isn’t already on the device then make sure you grab it.

Step 3: You will also need to make sure that you have uninstalled any apps or tweaks installed through Cydia, apart from the aforementioned iFile package.

Step 4: Launch iFile and head to System > Library > CoreServices.

Step 5: Look through that directory until you find the SystemVersion.plist file at the bottom of the list. Tap on it and open it with the Text Viewer option.

Step 6: Locate the ProductVersion key and change its value to 6.0 if you want to downgrade to 8.4.1, or 5.0 if you want to downgrade to 6.1.3.

Step 7: You are now going to need to find the corresponding build number for the firmware. For example, the build number for iOS 8.4.1 was 12H321. So if you are going to want to downgrade to 8.4.1, in the same location in iFile, look for the ProductBuildVersion key and change its value to this build number. The build number for iOS 6.1.3 is 10B329.

Step 8: Now you need to reboot your device. The theory here is that we are actually tricking Apple’s Settings app into believing that it is running iOS 6.0 instead of iOS 9.3.5. It then will provide a legitimate OTA update to either iOS 8.4.1 or 6.1.3.

Step 9: Launch Settings and navigate to General > Software Update. You will then notice that iOS 8.4.1 or 6.1.3 is now an available OTA download provided directly by Apple.

Step 10: And that’s all she wrote. Go through the update installation as you normally would with any OTA update.

Step 11: Once done, you can untether-jailbreak your iOS 8.4.1 device with yalu841, or on 6.1.4 using p0sixpwn.

As you can see this is relatively easy, but it does come with a few risks. As an example, if something goes wrong, then it’s likely that a force restore to iOS 10.3.3 would be necessary for those 32-bit devices which support it. If that happens, then no jailbreak is possible.