If your ISP is Movistar Chile , look for V22.0.0.1.18 or newer. For Telmex Mexico , V22.0.0.1.14 is the stable baseline.
Check the sticker on the back or bottom of your router for the exact model number (ZXHN H168N V2.2). zxhn h168n v22 firmware update download fix
You can update the router using the built-in management page or by downloading a manual file from the ZTE Support Site . Log in to your router’s admin page (usually 192.168.1.1 ). Navigate to Settings > Device Settings > Update Management . Select Check in the "Check New Version" section. If an update is found, click Apply and wait for the reboot. Manual Update Method: If your ISP is Movistar Chile , look for V22