Force the router to stay on N78 (5G) or specific high-speed LTE bands like B1 or B3.
2021 updates improved the logic for switching between internal antennas and external TS-9 ports. Key Versions and Regions zte mc801a firmware 2021
Many users look for 2021 firmware files to "downgrade" their routers or to de-brand a device locked to a specific carrier. While this can unlock features, it carries significant risks: Force the router to stay on N78 (5G)
ZTE releases firmware based on the specific "Sub-Model" and the original service provider. While the hardware is often identical, the firmware is not. Common 2021 identifiers include: zte mc801a firmware 2021
Are you trying to (like Bridge Mode) or fix a connection issue ?