I attempted re-flashing the device a few times now… And still the same behavior: It never leaves Maskrom mode, and doesn’t reboot/won’t boot off the eMMC.
I’m a little disappointed not to have heard anything back from Seeed after two weeks.
Also disappointing that it ships with kind of a broken Android build on it by default. Why not just ship it with OpenWRT as the default OS? Does anyone actually want to run that Android clone OS on it?