If you're currently jailbroken with mach_portal for iOS 10.1(.1), you should switch over to the new extra_recipe jailbreak. It uses a different exploit from mach_portal, and boasts better stability. iPhone 7(+) users on iOS 10.0.0-10.0.3 can also get in on the fun, and some users of Yalu for 10.0.1-10.2 can make use of extra_recipe if they wish too. Follow our guide to see how to go about it.
How to switch your jailbreak from mach_portal or Yalu to extra_recipe
