If you run installer like normal and do not do custom install to manually select OsxAptioFix3Drv-64.efi with this clover update, it completely removes OsxAptioFix3Drv-64.efi without warning which may leave you unbootable because you won't have it's replacement installed. Fortunately I always do smart thing and have a backup USB to emergency boot with a stable version of clover in case these things happen.r4586 is stable, once you load AptioMemoryFix-64.efi (which is meant as replacement for OsxAptioFix3Drv-64.efi).See https://www.tonymacx86.com/threads/...ptiofix3drv-64-efi.255174/page-2#post-1771018 further in thread for what's happening and how to avoid it going forward.