How do I reset my extender to factory defaults?
Press and hold the RESET button until all LEDs turn on momentarily, then release. Alternatively, log into the web management page at http://tplinkrepeater.net, go to Settings > System Tools > Restore & Backup, and click Factory Restore.
From the official TP Link TL Wa850re 300mbps Wifi Range Extender manual, page 35
Have a follow-up question?
Answers from the official manual.
Common questions