How to factory reset Apple HomePod (A1639) router – Default Login & Password

The Apple HomePod (A1639) router has Gigabit WiFi, N/A ETH-ports and 0 USB-ports.
How to factory reset Apple HomePod (A1639) - Default Login & Password

Apple HomePod (A1639) default Password , Login & Gateway settings :

If you have performed a reset of your HomePod (A1639) device or not changed the defaults, you
should
be able to access it with the following settings
Default subnet mask: 255.255.255.0

How to factory reset (hard reset) Apple HomePod (A1639) :

You can factory reset your Apple HomePod (A1639) 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

Apple HomePod (A1639) router specifications :

System specs
CPU: 1.4 GHz
RAM: 1024 MiB
Flash: 16384 MiB
Custom firmwares: None
Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands
2.4GHz & 5GHz
WiFi throughput: n/a
WAN
None
ETH
None
USB-ports: 0