Hi All,
Maybe somebody met this issue…
I have some xiaomi stuff, and everything works great until I received my new curtain. I would like to join this, so I install mihome app, and start the pairing. The app ask the gateway update, so I install that update, I think that was my mistake 
New stuff come online and seems like everything work great, but after 30 minutes stop working. 2-3 times blink the blue led on gateway than stop working. Is It possible after the new firmware the internet connection is mandatory?!