How to factory reset TP-LINK TL-WDR8500 v1.x router – Default Login & Password

The TP-LINK TL-WDR8500 v1.x router has Gigabit WiFi, 4 Gigabit ETH-ports and 0 USB-ports. It has a total combined WiFi throughput of 2200 Mpbs.
It is also known as the TP-LINK AC2200 Wireless Dual Band Gigabit Router.
How to factory reset TP-LINK TL-WDR8500 v1.x - Default Login & Password

TP-LINK TL-WDR8500 v1.x default Password , Login & Gateway settings :

If you have performed a reset of your TL-WDR8500 v1.x 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) TP-LINK TL-WDR8500 v1.x :

You can factory reset your TP-LINK TL-WDR8500 v1.x in the following way(s)
Through the web interface
Open a browser and navigate to the web interface of the router (see default settings below)
In the menu look for System tools and under there find the Factory defaults option
On the Factory defaults page click on the Restore button to perform the reset.
With the RESET/WPS button
Have the unit powered on
Press and hold the reset (sometimes reset/WPS) button for 10 seconds with a paperclip or other sharp object.
When the SYS led start blinking quickly release the reset button and wait for router to boot back up.

TP-LINK TL-WDR8500 v1.x router specifications :

System specs
CPU: 750 MHz
RAM: 128 MiB
Flash: 8 MiB
Custom firmwares: None
Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands
n/a
WiFi throughput: 2200 Mpbs
WAN
1 x Gigabit port
ETH
4 x Gigabit ports
USB-ports: 0