How to do if upgrade failure?

If the firmware upgrade of Mi Robot Vacuum series fails or cannot be upgraded:

1. Check whether the network is normal;

2. First shut down the device, then restart it, and wait for a few minutes to try;

3. Ensure that the remaining power of the robot is greater than 20%, and then try to upgrade;

4. If the upgrade is stuck, wait 20 minutes before trying to upgrade again.