Hard reset TP-LINK TL-R860

Factory reset (Hard reset) The reset button is on the rear panel and should be labeled RESET. Option 1: with the router ON, press and hold the Reset button for somewhere between 8 and 10 seconds. Release and wait for the router to restore its default settings. Option 2: with the router ON, press and hold the button for five seconds. Release and wait. PS. There are different options because the router has been produced in two different ‘versions’ so far.
Firmware Firmware link
Default username admin
Default password admin
Default IP address 192.168.1.1