You provided no details on your issue.
Keep in mind after running applying the update, there are several reboots required, and each one you must pay attention to the options listed in Clover. Clover will not automatically choose the correct option all the time. Just make sure you run the installer until it is removed from the list of Clover boot targets.
Note also that your drivers64UEFI is not per guide. The guide now recommends AptioMemoryFix.efi instead of OsxAptioFix*.efi+EmuVariable*.efi.
Also, as is written in post #1, you need to update Clover. The revision you have is not new enough for 10.13.4.