For every new iOS versions, new jailbreak methods and tools are releasing. Each tool uses different ways to jailbreak iOS devices. Even what tools or methods use, there are four types of procedures that Jailbreak can be complete. The procedures are Tethered vs Untethered Jailbreak, semi-tethered Jailbreak, and Semi UnTethered Jailbreak. The below descriptions will describe both procedures for more understanding in cydia untethered and tethered models.
What is Tethered Jailbreak
Tethered Jailbreak is a temporary jailbreak method that can use it with a single boot. If your device, battery dead, or restarted, you need to get help from computer and jailbreak tool to boot up. After jailbroken with Tethered, The device will not be running the patched kernel and stuck with recovery mode. It means, when you turn on, it shows as recovery mode and does not load the Operating system. To start the device completely with a patched kernel, you must be re-jailbreak your device by connecting to the computer using a jailbreak tool. All changes you have done before for systems files or adding new packages will exist on the device even re-jailbreak.
What is UnTethered Jailbreak
UnTethered Jailbreak is the most popular and powerful jailbreak procedure in iPhone and iPads. Most of the users are waiting for UnTethered instead of Tethered Jailbreak. Untethered Jailbreak uses exploits, and the kernel will be patched without the help of a computer. Hence, you can reboot the device anytime without the help of a computer or jailbreak tool. Also, it starts the device in a normal way. Therefore, it is very easy to handle than Tethered Jailbreak.
What is Semi Tethered Jailbreak
In semi-tethered Jailbreak, the device can start its own without helping a computer. But no longer have patch-kernel and can not run the modified code. The device can be useable with normal functions. Cydia apps and other jailbroken apps will be crash until boot back with the jailbroken state. So, connect to a computer and get back the jailbroken states with using Jailbreak tool
What is Semi-UnTethered Jailbreak
Semi-UnTethered Jailbreak is similar to Untethered Jailbreak, and it starts the device its own. When the device starts up with the original and non jailbroken configurations. To get jailbreak state, you must re-jailbreak with jailbreak tool. If you already have a previous jailbreak tool in your iOS device, you can open it and re-jailbreak. If it is not there, able to sideload or directly download the jailbreak tool and re-jailbreak the device.
Moreover, Most of the latest new jailbreak tools are Semi-UnTethered Jailbreak. Try to jailbreak your iPhone and iPad with Unc0ver, Chimera, Electra Jailbreak tool.
These are four procedures of jailbreaking. Most of the time, UnTethered or Semi UnTethered Jailbreak takes time to release new iOS versions. Because it is easy to handle without a computer when the device is restarts. If you are a beginner, we recommend only these two methods for your device safely. Hope you got the idea about difference between untethered and tethered jailbreak methods.