Do not update firmware over Wi-Fi, as a connection drop can ruin the update.
You must log in to your ISP’s subscriber portal or visit their device support page to download the authorized firmware package for your specific hardware variant. Step 1: Identify Your Exact ZTE Model and Hardware Version
And below it, a link: zte-fw-upgrade(dot)net/patch/H298A_v2.6.1.bin zte router firmware upgrade download link
Most ZTE routers are distributed by ISPs (e.g., AT&T, T‑Mobile, Vodafone, Telstra, Bell). The ISP controls firmware updates.
Method 2: Official ZTE Router Firmware Upgrade Download Links Do not update firmware over Wi-Fi, as a
Go to System Settings or Management and select Firmware Update .
the router during the process, as it will reboot automatically once finished [6, 11]. The ISP controls firmware updates
If your ZTE router (such as the ZXHN H298A or ZXHN H108N) was provided directly by your internet service provider (e.g., Vodafone, Telstra, Orange, or PLDT), the firmware is customized by that specific carrier.