diff --git a/Sonoff-DIY.md b/Sonoff-DIY.md
index e4a04c00..ad65dd48 100644
--- a/Sonoff-DIY.md
+++ b/Sonoff-DIY.md
@@ -100,6 +100,10 @@ This procedure is recommended for MacOS, but also works for Linux.
   > `$ curl http://<deviceIP>:8081/zeroconf/ota_unlock -XPOST --data '{"deviceid":"<deviceID>","data":{} }'`  
 
   **_`{"seq":2,"error":0}`_**  
+
+If OTA unlocking gets stuck, the Sonoff device could not reach the manufacturer server because your mobile hotspot does not share the Internet connection. If this happens, POST a request on `/zeroconf/wifi` with `'{"deviceid":"<deviceID>","data":{ "ssid": "yourssid", "password": "yourpasswd" } }'` to set the SSID and password of your Wi-Fi network on the sonoff device. The device will connect to your network. Disable the hotspot and use your Wi-Fi as well, and restart `/zeroconf/info` and `/zeroconf/ota_unlock`.
+
+
 - Flash firmware at `/zeroconf/ota_flash`  
   > `$ curl http://<deviceIP>:8081/zeroconf/ota_flash -XPOST --data '{"deviceid":"<deviceID>","data":{"downloadUrl": "http://<webServer>/tasmota-basic.bin", "sha256sum": "<SHAsum>"} }'`