This work around will only apply if you have a monitor that can be switched off/on without powering down the computer. If you can attach a separate monitor to a laptop it should also work for that.
I discovered (Quite by accident) that if you turn off your monitor and restart it after the Advanced Recovery, Restart Now sequence is allowed to run ( I give it about 30 seconds of black screen) it lets the video resync with the monitor. From there the standard recovery menu is there complete with UEFI BIOS select. Hope this helps someone else cause its been driving me nutz!!!