Connection to network timed out Mi Bedside Lamp 2

Can not connect my Mi Bedside Lamp 2 to iPhone using Mi Home app.
Fails at connection to network step.
There is no option of altering any router settings.
What can I do?
How to update firmware?

You can try using your phone to turn on an Internet hotspot, connect the lights to the hotspot network, then upgrade, and then switch back to the original network