Hard reset D-Link DIR-857

Factory reset (Hard reset)Power ON the device. The reset hole is located on the back panel of the router, it is marked with red. Press in it with a thin object and hold for 10 seconds. Release. Wait for 1 min for the router to reboot.
FirmwareFirmware link
Default usernameadmin
Default password[leave blank]
Default IP address192.168.0.1