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Download 3uTools Semi-Untethered JB Get Cydia Free

3uTools iOS 15.2.1 jailbreak
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I understand you want to jailbreak your iDevice Run iOS 15.3 to iOS 15.2.1, right? You’re in the right place, because our jailbreak wizard will give you exactly what you need. Just make sure you select what type of iDevice you have, its model and iOS version and hit the big blue button to check if you can jailbreak!

The 3uTools iOS 15.2.1 jailbreak is semi-tethered and will stop working every time we turn off or restart the device.
Chekra1n iOS 15.3 App Install Overview

Cydia Free

To be confirmed– As the system requires Cydia Impactor, the jailbreak could stop working in 7 days if it is confirmed that it depends on developer certificates. Developers will likely add support for its web activation system, which will fix this problem.

Some semi-untethered jailbreaks can be completed entirely on the device using a sideloaded app (which still requires a computer). Others require a computer to be used first, and then an app or website can be used to rejailbreak after each reboot.

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iCloud Bypass iOS 12.4 To iOS 15.2.1
iCloud Bypass iOS 12.4 To iOS 15.2.1


A semi-tethered jailbreak is one that permits a handset to complete a boot cycle after being pwned, but jailbreak extensions won’t load until a computer-based jailbreak application is deployed over a physical cable connection between the device and the computer in question.

Semi-Untethered jailbreaks have become the norm, as the last known code signing bypass – which is required for execution on boot has been exploited by iOS 15.2.1 and the shared cache malformation bug.

How Does Semi-Untethered Jailbreak Work?

Yalu is a semi-untethered jailbreak, which means that when your device restarts, it will no longer have a patched kernel. You cannot use any jailbreak tweaks you have installed and Cydia will crash when launched. To re-jailbreak, simply open the Yalu app and perform a jailbreak again. Your device will then go back to its normal jailbroken state.

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3uTools Semi-Untethered Step Guide


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

How to Jailbreak 15.2.1
How to Jailbreak 15.2.1

Step 2. Now click “iOS 15.2.1 Jailbreak” on the right side. After that, Jailbreak will be installed on the iDevice. Then follow the prompts of 3uTools to complete jailbreak.

How to Jailbreak iOS 10.0 - 10.2 Using 3uTools?
Jailbreak 15.2.1

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

How to Jailbreak iOS 10.0 - 10.2 Using 3uTools?
Install Jailbreak 15.2.1

Step 4. Please launch the Jailbreak 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 has been completed.

How to Jailbreak iOS 10.0 - 10.2 Using 3uTools?
Cydia Install iOS 15.2.1

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.

semi-untethered jailbreak is similar to an untethered jailbreak, but it gives the ability to start the device on its own. In each boot, the device startup sequence is unmodified and it boots into its original, non-jailbroken configuration. However, rather than having to run a tool from a computer to jailbreak.

Like tethered or semi-tethered cases, the user is able to re-jailbreak their device with the help of an app (usually sideloaded using Cydia Impactor) running on their device.

In the case of the iOS 15.2.1 jailbreak, a Safari-based exploit was available, thereby meaning a website could be used to rejailbreak.

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