Here is the most common frustration: ZTE does not distribute firmware directly to consumers. They sell to ISPs, and ISPs control the firmware stream. To get the file:

Download the specific firmware version for your hardware (e.g., V9.0 or V10.0) from an authorized ZTE support site Access the admin page (usually

If you have been searching for the term you are likely experiencing lag, Wi-Fi dropouts, or security concerns. Or, perhaps your Internet Service Provider (ISP) has pushed a notification about a mandatory update.