You can update or manage the firmware by following these steps through the ZTE ZXHN H108L Admin Page :
If you are currently experiencing Wi-Fi dropouts or slow ADSL sync, check your firmware version today. It might be the small fix that saves you from buying a new router. zxhn h108l firmware
The ZXHN H108L firmware achieved its most lasting infamy not for what it did, but for what it secretly allowed. Security researchers in the mid-2010s discovered multiple severe vulnerabilities, turning the device into a favored target for botnets (e.g., Mirai variants). You can update or manage the firmware by