Which iOS jailbreaking technique patches the kernel during the device boot so that it becomes jailbroken after each successive reboot?

Question

Options

• ATethered jailbreaking
• BSemi-tethered jailbreaking
• CUntethered jailbreaking
• DSemi-Untethered jailbreaking

• A
  5% (1)
• C
  90% (18)
• D
  5% (1)

Explanation

Untethered Jailbreaking Explained

Untethered jailbreaking (C) is correct because it permanently patches the kernel during the boot process itself, meaning the device retains its jailbroken state after every reboot without requiring any external assistance - the exploit runs automatically each time the device starts up.

Why the distractors are wrong:

• Tethered (A): Requires the device to be connected ("tethered") to a computer each time it reboots to re-apply the jailbreak; without the computer, it won't boot properly.
• Semi-tethered (B): The device can reboot on its own, but it loses jailbreak functionality until reconnected to a computer to re-patch.
• Semi-Untethered (D): The device reboots normally without a computer, but jailbreak functionality must be re-enabled manually by running an app on the device itself after each reboot.

Memory Tip: Think of "untethered" as completely free - no strings (or cables) attached, in any situation. The "un" prefix means it needs nothing extra to maintain the jailbreak, including after reboots. If you can remember that tethered = tied to a computer, the gradations (semi-tethered, semi-untethered) logically fall into place between the two extremes.

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