Sonoff Basic R2 Flashing

Hi, Im attempting to get a bunch of Sonoff Basic R2 to integrate with Smartthings. So far ive managed to Flash the firmware using the file published by erocm1231 (thank you) using NodeMCU. The device then transmits its SIDD which I can connect to and navigate to change the wifi network however no matter how many times I try to change the WIFI network it simply won’t connect and stays broadcastings its own SIDD. Can anyone give me any advice on how to over come this? Is there a new version of the firmware i should be using?

Also i cant find any release notes for the firmware. Does anyone know if this enables a local switch to be connect to a GPIO as does the Tasmota firmware? Thanks