Yeh there is a 11.4 public exploit,short story is it involves crashing apps in a series of ways to escape sand box.Its patched in ios 11.4.1... Geosnow will be updateing orafis probably best one to go for. IMO these new breed of JBrs are Tweak devs and there skills are of that so don’t expect good battery or stability (not on about Geosnow btw hes a guy with a few skills ) . IOS 12 is were I expect good things to come from the old “s-cool” devs as 12 is really a ***** Good os for stability performance even on old devices.