So I just re-imaged the eMMC card for my oDroid C2, and now it doesn't seem to be powering up at all - was working before I took it out of the case - but now nothing, No blue light, no red light, no lights at all.
Have I somehow killed it?
OK, so it was just me being a dumb-ass.
I haven't done anything with Linux or an oDroid etc in ages. I didn't realise that a *.img.xz file need to be extracted before imaging onto the eMMC.