How to factory reset Xiaomi MiWiFi HD router – Default Login & Password

The Xiaomi MiWiFi HD router has Gigabit WiFi, 3 Gigabit ETH-ports and 0 USB-ports.
It is also known as the Xiaomi Xiaomi MiWiFi HD R3D.
How to factory reset Xiaomi MiWiFi HD - Default Login & Password

Xiaomi MiWiFi HD default Password , Login & Gateway settings :

Default Gateway IP: 192.168.31.1
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.31.1

How to factory reset (hard reset) Xiaomi MiWiFi HD :

You can factory reset your Xiaomi MiWiFi HD in the following way(s)
1. When the router is on, press the button reset and hold for 30 seconds.
2. While holding down the button reset, turn off the power of the router and hold down the button reset for 30 seconds
3. While holding down the button reset, turn on the power to the unit again and hold for another 30 seconds

Xiaomi MiWiFi HD router specifications :

System specs
CPU: 1.4 GHz
RAM: 512 MiB
Flash: 256 MiB
Custom firmwares: None
Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands
n/a
WiFi throughput: n/a
WAN
1 x Gigabit port
ETH
3 x Gigabit ports
USB-ports: 0