Thank you for the info.
I tried that image in Raspberry Pi Imager, LibreELEC USB-SD Creator and BalenaEtcher.
None could format either SD card, I think they are both duff.
I've also tried Diskpart & putting them in my camera which has worked on multi partition SD cards before.
I'll order a couple more SD cards, what size /brand would you recommend for LibreELEC & games?