There's a bug in the wiki instructions for installing UEFI - namely, you end up with an initrd called initrd.img-3.18.0-linaro-hikey when the UEFI boot option is looking for initrd.img. You can change that (via the boot options menu)...
Any clue how to mount the boot image that's in mmcblk0p4 - it's of type 'bios boot'. Failing that, can it be changed to DOS / VFAT? I'm trying to run standalone here...
many thanks, David