The Electra Team has released Chimera, a new iOS 12.0-12.1.2-centric jailbreak tool that supports A12(X) devices and Sileo. https://www.idownloadblog.com/2019/04/29/electra-team-releases-chimera-jailbreak-for-ios-12-0-12-1-2-with-support-for-a12x-and-sileo/