RESOLVED: Answer at the bottom of here.
I have early edition Sparkcores, wherein it appears the Tinker firmware installed by doing a factory-reset is too old and doesn’t work properly with CLI
spark setup wifi any more.
I figure there must be a way to send over a current image of the Tinker firmware – and I need to do that, to resolve a problem with remote debugging.
I’m guessing the firmware image is stored in the external Flash? So we should be able to send over a fresh copy using dfu-util, yes?
(I looked in documentation, but didn’t find anything on this, understandably.)