I got my D2Wifi today from your store and must say, that the DuetWiFiServer.bin was “corrupt”. (it was the sole file with mismatching date)
It didnt accept my WiFi settings (M587: Failed to add SSID to remembered list).
After updating Firmware re-installing WiFi module firmware (Firmware Fallback #1) it finally connected.
Perhaps you should give that advice more clearly in Step5!
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