Jailbreaking an iOS device allows users to remove software restrictions imposed by Apple, enabling them to customize their devices, install unauthorized apps, and gain deeper control over the operating system. However, not all jailbreaks are the same. In this guide, we will discuss the different types of jailbreaks, how they function, and their key differences.

1. Untethered Jailbreak

Description

An untethered jailbreak is a permanent jailbreak that remains active even after the device is restarted. Once the jailbreak is applied, it does not require any additional action to reapply after each reboot.

Persists After Restart?

Yes

Examples

• Evasi0n
• Pangu

Pros

• No need to connect the device to a computer after a reboot.
• Offers full control over the device without limitations.

Cons

• Higher risk of security vulnerability.
• Limited availability for newer iOS versions.

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2. Tethered Jailbreak

Description

A tethered jailbreak requires the user to connect their device to a computer and reapply the jailbreak every time the device is restarted. Without reapplying the jailbreak, the device will not boot into a jailbroken state.

Persists After Restart?

No

Examples

• Redsn0w

Pros

• Provides full control during the jailbroken state.

Cons

• Requires a computer for rebooting the device.
• Inconvenient if the device powers off frequently.

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3. Semi-Tethered Jailbreak

Description

A semi-tethered jailbreak allows the device to reboot without a computer but disables jailbreak features until it is re-jailbroken manually. This option is somewhat better than a tethered jailbreak since it does not completely restrict the device after a restart.

Persists After Restart?

No

Examples

• Checkra1n
• Palera1n

Pros

• Allows reboot without being connected to a computer.
• Jailbreak can be reactivated without reinstalling everything.

Cons

• Requires manual re-jailbreaking after each reboot.

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4. Semi-Untethered Jailbreak

Description

A semi-untethered jailbreak allows the device to reboot normally, but jailbreak features are disabled until they are reactivated using an app on the device itself. This is a significant improvement compared to a tethered jailbreak because no computer is required.

Persists After Restart?

No

Examples

• Unc0ver
• Chimera

Pros

• No need for a computer to re-jailbreak.
• Easier to manage compared to tethered jailbreak.

Cons

• Requires reactivation after every restart.

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5. Rootless Jailbreak

Description

A rootless jailbreak does not modify the root file system, providing a safer and more limited jailbreaking experience. Because it avoids tampering with the root, it significantly reduces the risk of bricking the device or major security vulnerabilities.

Persists After Restart?

No

Examples

• Dopamine
• XinaA15

Pros

• Safer than traditional jailbreaks.
• Less likely to cause system instability.

Cons

• Limited functionality compared to full jailbreaks.
• Some customizations may not be possible.

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How to Choose the Right Jailbreak Type

Choosing the right jailbreak depends on your needs and technical knowledge. If you want a hassle-free, permanent jailbreak, an untethered jailbreak is ideal but may not be available for newer iOS versions. On the other hand, if you don’t mind re-jailbreaking occasionally, a semi-untethered or semi-tethered jailbreak might be a better option.

Is Jailbreaking Safe?

Jailbreaking inherently exposes your device to potential security risks, such as malware, data breaches, and instability. Therefore, always ensure you understand the risks and use trusted jailbreak tools to minimize security threats.

Conclusion

Jailbreaking opens up a new world of customization and control for iOS users. However, it comes with its own challenges. Thus, understanding the different types of jailbreaks can help you make an informed decision based on your preferences and device capabilities.