What to do if the Xiaomi Earbuds APP fails to update the firmware?

If the Xiaomi Earbuds APP fails to update the firmware, please try the following methods:
1. If the firmware package download fails, please ensure that the network is unobstructed, or change the network, and then try to update again;
2. If the connection between the mobile phone and the earbuds is unstable, please try to update again, or try again in a place with less wireless interference;
3. The APP does not support updating in the background or in the locked screen state. Please ensure that the Xiaomi Earbuds APP is running in the foreground and the screen is not turned off.