Nice (inadvertent?) pun. As an aside, everything I've heard and read is that the SE runs iOS 12 very well. I know my 7 plus runs it like a dream. It does seem jailbreaking is kind of a thing of the past - and most of what they wanted to do is already available in iOS.There is no Jailbreak for iOS 10, 11 or 12.
You can watch the Jailbreak forums over on Reddit for updates. Though it may be a fruitless endeavor.