Meridian Jailbreak

Meridian jailbreak has been released for iOS 10.0 - iOS 10.3.3 running all 64-bit devices to download Cydia.
It is a semi-untethered jailbreak and you will need to re-run the jailbreak app every time you reboot your iPhone or iPad.
After testing six betas, they could release final build as Meridian v0.9. However, it is still in pre-release stages.
Device Compatibility
iPhone 7 & 7 Plus, iPhone 6S & Plus, iPhone 6 & 6 Plus, iPhone SE, iPhone 5S, iPad Air 1, iPad Air 2, iPad (2017), iPad Mini 2, iPad Mini 3, iPad Mini 4, iPad Pro 1, iPad Pro 2, iPod Touch 6th Gen.
Version Compatibility
iOS 10.3.3, iOS 10.3.2, iOS 10.3.1, iOS 10.3, iOS 10.2.1, iOS 10.2, iOS 10.1.1, iOS 10.1, iOS 10.0.3, iOS 10.0.2, iOS 10.0.1, iOS 10.


PsychoTea - PsychoTea is an iOS/Jailbreak developer from United Kingdom. He is known as Ben Sparkes, sparkey and @iBSparkes in Twitter since 2013. His first jailbreak tool was Meridian Jailbreak, and initial release was on 04th January 2018. Also, he released OverClock Jailbreak project for watchOS 3.
Siguza - Siguza is a famous iOS hacker from Switzerland. His twitter name is @s1guza since 2010. He developed another few Jailbreak such as h3lix jailbreak for iOS 10.3.3 - iOS 10 (32-bit) doubleH3lix  Jailbreak for iOS 10.3.3 - iOS 10 (64 bit), Phnix jailbreak for iOS 9.3.5.

Jailbreak Methods

Meridian Jailbreak PC method (Cydia Impactor method)
Meridian Jailbreak is IPA based Cydia Impactor method, and you need to MAC or Windows PC support complete the Jailbreak process. Please follow the below guide.

Meridian Jailbreak Cydia Installation guide - (PC Required)

Step 01 - Download Meridian Jailbreak IPA file.
Step 02 - Download Cydia Impactor from the official site.
Step 03 - Open Cydia Impactor and connect your device to the PC. 
Step 04 - Drag and drop the Meridian IPA file onto Cydia Impactor.
Step 05 - Enter your Apple ID credentials to sideload Meridian Jailbreak app to your device.
Step 06  - Now it will have to install Meridian app on your device homescreen. Now verify the Jailbreak app.  Go to the Settings app, go to General > Profiles & Device Management.
Step 07 - Now run Meridian app from your device homescreen and Tap on the Go button.
Step 08 - Your device will Reboot during the process. Finally, you can find Cydia on your device homescreen.

Meridian jailbreak cydia not working - How to fix

Many users have complained about Cydia not working with Meridian jailbreak. Cydia is not showing for some people as well as Cydia crashes for some people.
However, this not affected for who use latest meridian version for Jailbreak their device. It is affected only for users who used Meridian beta 1 to beta 3 for jailbreak their devices. Meridian beta four & five has fixed the following issues.
Public Beta 4 [2018-1-7] - Fixed Cydia not showing up for some users
Public Beta 5 [2018-1-16] - Fixed the 'Delete Cydia' option not working

Meridian jailbreak for latest iOS versions

Currently Meridian Jailbreak compatible up to iOS 10.3.3 version only. Most probably developer can upgrade meridian jailbreak iOS 11 & higher versions hence these versions are Jailbreakable. Also, it has few jailbreaks up to iOS 11.3.1 versions. So we can expect tool upgrade up to meridian jailbreak 11.3.1.
However, meridian jailbreak 11.4 & meridian jailbreak iOS 11.4.1 is far away. Because there is no any semi-untethered jailbreak for these two versions yet. It has only jailbreak alternative solution for iOS 11.4.1 Jailbreak & iOS 11.4 Jailbreak.
Also, there is no semi-untethered Jailbreak for iOS 12 to iOS 12.1.1 beta too. The developer should upgrade the Meridian jailbreak for iOS 11 versions before trying the iOS 12. However,alternative jailbreak solutions available for iOS 12 versions.

Compare Meridian Jailbreak and Other iOS 10 Jailbreaks

It has many jailbreak tool for iOS 10 to iOS 10.3.3  versions.
Best jailbreak based on the few essential features such as stability, Compatibility, app support & developer support.
We can consider Meridian as the best Jailbreak tool for iOS 10 versions when we compare with these facts with the other jailbreak tools.
Meridian Jailbreak vs Yalu102 Jailbreak
Meridian is more stable than Yalu 102 because it is a Kernel Patch Protection-less jailbreak.
Even Yalu102 jailbreak no support for the iPhone 7, Meridian does.
Yalu 102 support ended at iOS 10.2, But  Meridian jailbreak tool support extends up to iOS 10.3.3.
Yalu Jailbreak app support is average level compare with the Meridian Jailbreak.
Meridian Jailbreak vs G0blin Jailbreak
No more tool support & update from Yalu 102 developer and He left this jailbreak, but Meridian developer is active.
Meridian Jailbreak is more stable than G0blin because G0blin Jailbreak is still work-in-progress.

According to G0blin developer, there are few things not working that are related to a kernel patching issue such as Touch ID not working in containerized Apps, Preferences misbehaving in containerized Apps and Failure to launch an App via Xcode.
G0blin Jailbreak support only for iOS 10.3.X versions. But Meridian Jailbreak support for all iOS 10.X.X versions.
G0blin Jailbreak does not have public IPA yet and available as X code project while Meridian release public IPA.
Meridian Jailbreak vs Saigon Jailbreak
Saigon Jailbreak support only for iOS 10.2.1 while Meridian supported all iOS 10 versions.
When it compares with the Meridien, Saigon stability is very poor. Saigon requires a lot of tries to inject the exploit.
Saigon developer support for the community is weak too. The developer has left the scene. But Meridian developer still updating the tool.
Meridian Jailbreak No PC method
Online Jailbreak method is the easiest way to Jailbreak. You can Jailbreak your device easily without computer support with this method.
Meridian Jailbreak IPA's available with Silzee Online JB app. You can download Silzee Online JB app from zJailbreak or iExtras or any other related site.
Step Guide to Online Meridian Jailbreak from Silzee
Step 01 - Download zJailbreak or Xabsi from following installation buttons.
Step 02 - Download Silzee Online Jb app from zJailbreak or Xabsi.
Step 03 - Open Silzee app and tap Meridian Jailbreak install button.
Step 04 - Once complete, Meridian app will be available on your device homescreen.

Step 05 - Trust the Meridian app before launch the Meridian app from your iPhone or iPad. Go to the Settings app, go to General > Profiles & Device Management>Trust. 

Step 06 - Open Meridian app from your device and Tap on the Go button to start the Jailbreak process.

Step 07 - After a few seconds, your device will Reboot and finally, it will be available Cydia on your device homescreen.