@formfab said in Zero upload capability:
@dc42 Well its never successfully uploaded anything that ive wanted it too so i havent seen that. That installation of dwc in the www dir was manual pc to card and M997 S2 once back in the boards card slot. I really dont get the impression there is a hardware issue because everything works hardware wise. It connects to its network, prints, tunes, responds to code, communicates to any terminal ive tried. It just gets pissed when i ask it to upload.
As you have already tried several different SD cards, I suspect either a hardware issue with the WiFi module, or an incompatibility between the ESP12S WiFi module and your router.