Solved Is It Possible To Downgrade From 11 4 1 To Jailbreak Iphone 6S

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Hi everyone. I wanted to ask if there is a way to downgrade from ios 11.4.1 (my current version) to 11.2.1 ( i have ios 11.2.1 SHSH BLOBS SAVED) in order to jailbreak i have tried many ways (noncereboot1131) but still not working for me i really need to jailbreak my iPhone 6s ! please help

As Apple had stopped signing the firmware, you can no longer downgrade iOS 11.4.1 to iOS 11.4 Beta 1, 2 or 3 on iPhone. If you upgrade to 11.4.1, you will no longer be able to jailbreak your iPhone. It is said that there are some third-party utility can help jailbreak iPhone with iOS 11.4.1, you may research that. Good luck!