I also noticed that the latest Odroid-C2 build (8.1.9) doesn't work from EMMC. I will try SD card later (not yet tried). Version 8.1.8 works fine when burned via DD or via the LE bootcard maker. Version 8.1.9 ends up @ a black screen saying something about not being able to access "Libreelec_Disk" partition. I will update this later with the exact error.
EDIT: I have serial access on both, if you want me to provide some logs or run any commands. Just trying to capture them now
Cheers as usual!