I anaged to get
https://archlinuxarm.org/platforms/armv ... /odroid-c2 working by using an external SD card reader, NOT the ubiquitous adapters.
With an SD card adapter neither MMC nor Mini-SD did work.
The same commands repeated from the bach_history but this the changed address of an external SD card adapter (bought the "bestseller" at Amazon) did the trick.
Maybe, maybe -- someone more familiar with the script might chime in) the ./sd_fusing.sh is different for /dev/mmblkX and /dev/sdX? That is the only software-side difference that I could think of.
(Now that the Odroid-C2 is up and running I am browsing the forums, this thread caught mt attention.