Hey @damon.dinsmore, I think the problem is that Sonoff (and other manufacturers) have changed how the SPI communicates in the esp8266 from QIO to DOUT. My firmwares have been compiled using QIO, but flashing applications such as NodeMCU flasher can change it on the fly during the flashing process. The NodeMCU flasher can be found here:
Download the Hubitat app
