Here is a comprehensive guide on how to update the software in your ZTE MF296R, including both automatic and manual methods. Why You Should Update Your ZTE MF296R Software
If possible, use an Ethernet cable instead of Wi-Fi for manual updates to avoid signal drops during the file transfer.
If an update is available, the router will prompt you to download it. Click to begin.
Under the section, click the Check button.
The process may take several minutes. The router will likely reboot itself once finished.
Enter your admin username and password. If you haven't changed these, they are usually found on a sticker at the bottom of the device. Step 2: Update Software (The Easy Way)