Then boot from usb, will see "a software package update is needed to work with this startup disk" which is able to update the boot rom This patcher is surely an enhancement of the original such as the @jackluke Night time Shift patch. You can find an OpenCore add-on available https://beststopsforscenicviewson18418.blogripley.com/35962333/getting-my-scenic-overlooks-at-ragged-point-big-sur-to-work