How To Reset ZyXEL Router To Factory Default Settings - YouTube
ZyXel EMG3425 Router: How to Reboot & Factory Reset – Starry Support
AX Access Points / Reset Button and Device Reset – Zyxel Support Campus EMEA
How to factory reset ZyXEL NBG4615 v2 router - Default Login & Password - How to Factory reset Your Router - Routers' Specifications, Manuals and Factory reset Information