WIFI module has stopped working

It’s the Adafruit Huzzah 8266. I think I should try uploading the latest firmware to it before calling it fully dead because I can see the light flashing on it. I believe the latest firmware available that supports it is 5.0.2, is that correct? Are there any instructions to follow for linux on how to upload the firmware to it? If it turns out to be fully dead, is there a replacement I can get or preferably a wired alternative (as I’d prefer that to wifi)?

Never mind, it is working after all. However I might still update the firmware. As I now have access to the web interface is it a simple case to just supply the firmware and click Update?