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Which jailbreaking method does not retain the patched kernel after reboot,

bud does leave the software on the device, allowing for future jailbreak activities?

Semi-tethered jailbreaking


In semi-tethered jailbreaking, a reboot no longer retains the patched kernel;

however, the software has already been added to the device.

Therefore, if admin privileges are required, the installed jailbreaking tool can be used.


A reboot removes all jailbreacking patches in  tethered mode, and in untethered mode, the kernel will remain patched(that is, jailbroken)


after reboot, with or without a system connection.


Rooting is associated with Android devices, not IOS.