Semi-tethered jailbreak tool checkra1n released to the public

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A semi-tethered jailbreak tool called checkra1n has been released to the public. You can download and install using a Mac computer from Windows and Linux compatibility coming soon.

This jailbreak can be used to jailbreak ANY firmware on any device that uses the A5-A11 Bionic Chip. We will be leaving a list of devices below. So yes, you can semi-tether jailbreak your device that is on the iOS 13.2 firmware on your iPhone 8. Or even the future iOS 14 on an iPhone X. Currently, though, it seems as though checkra1n only covers iOS 12.3 through 13.2.2. You are able to install Cydia or Zebra with checkra1n.

This tool uses the popular unpatchable bootrom exploit, created by axi0mX, called checkm8. With the checkm8 exploit you can not only semi-tether jailbreak your device, you can also downgrade/restore to any firmware with SHSH Blobs, dual boot other firmwares, install custom IPSWs, and bypass iCloud locks. But it is still unclear (at the time of writing this article) if the checkra1n jailbreak can do all of these things.

Let’s discuss what a “semi-tethered” jailbreak is and the different other types of jailbreaks. The word tether, when it pertains to jailbreaking, means that you have to be connected (or tethered) to a computer in order to boot your phone. So yes, you can NOT use your phone if it restarts for ANY reason.

When you add the semi on to the word, it means that you have to be connected to a computer in order to jailbreak your phone but you can boot into a non-jailbroken state, which is what checkra1n is.

There is also an untethered jailbreak. An untethered jailbreak is a jailbreak where you can boot into a jailbroken state after rebooting your phone even after the phone dies or you just turn it off.

The last version of a jailbreak is a semi-untethered jailbreak which is what we are used to these days with Chimera and unc0ver. Basically you need a tool to put your phone into a jailbroken state but you cannot reboot your phone into a jailbroken state.

Pwn20wnd, the head developer behind the unc0ver jailbreak, has spoken about a semi-untethered jailbreak for iOS 13.1.3. There was a kernel bug reported with 12.4.1 through 13.1.3 so all of those firmwares may have an exploit if created. Once, and if, this jailbreak is released you will be able to semi-tether jailbreak using checkra1n on iOS 13.1.3 and then once unc0ver is released, semi-untether boot your phone with the unc0ver application on your device.

We do want to give thanks to the team who have worked tirelessly to get this right for the community, @_argp, @axi0mX, @DanyL931, @Jaywalker, kirb, @littlelailo, @nitoTV, nullpixel, @pimskeks, @qwertyoruiop, @sbingner, @s1guza, haifisch, @jndok, jonseals, @xerub, lilstevie, psychotea, @Simone_Ferrini, and Cellebrite (ih8sn0w, cjori, ronyrus)

This page will be updated with more facts about the new checkra1n jailbreak, however, for now, you can check out Luca’s PowerPoint.

checkra1n will eventually support all devices between the iPhone 5s (A5) and the iPhone X (A11), however, this beta lacks support for the following devices:

iPad Air 2
iPad 5th Gen
iPad Pro 1st Gen

Support for the following devices is experimental, and may require more attempts than usual:

iPhone 5s
iPad Mini 2
iPad Mini 3
iPad Air

checkm8 Supported Devices:

Supported iPhones:
iPhone 4S,
iPhone 5
iPhone 5C
iPhone 5S
iPhone 6
iPhone 6 Plus
iPhone 6S
iPhone 6S Plus
iPhone SE
iPhone 7
iPhone 7 Plus
iPhone 8
iPhone 8 Plus
iPhone X

Supported iPads:
iPad 2
iPad Mini (1st gen)
iPad (3rd gen)
iPad (4th gen)
iPad Air
iPad Mini 2
iPad Mini 3
iPad mini 4
iPad Air 2
iPad 2017 (5th gen)
iPad Pro (12.9 in.) 1st gen
iPad Pro (9.7 in) 1st gen
iPad 2018 (6th gen)
iPad 2019 (7th gen)
iPad Pro 10.5″ 2nd gen (2017)
iPad Pro 12.9″ 2nd gen (2017)

Supported iPod Touch:
iPod touch (5th Gen)

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Daniel, 25, has been following Apple products since the release of the first iPhone in 2007. He has been following the jailbreak scene since iPhone OS 1.0 in 2007. Around this time in 2007, he also started getting interested in developing apps and tweaks for iPhone OS devices. While he has not publicly completed any of these, he still continues to follow the Apple Beta and Apple Jailbreak scene closely. He also has a passion for web development and design.