modem inside performed exceptionally well with the 2021 software refinements. Are you looking to
| Version Code | Approx. Release | Key Changes | | :--- | :--- | :--- | | | Early 2021 | Initial wide release. Fixed major DNS leakage issues. Prone to random reboots under heavy load. | | B11 | Mid 2021 | Highly Recommended. Optimized CPU load. Better handling of 5G handover. Improved Web UI response time. | | B13 | Late 2021 | Interim build. Improved IPv6 stability for UK networks (Three/EE). | | B15 | End 2021 | Major stability patch. Better heat management. Restricted band locking on some carrier variants. | zte mc801a firmware 2021
Early versions of the firmware reportedly had issues where the router did not recognize external antennas connected via the TS-9 ports . An update released around April 2021 (notably for the Chinese and global variants) addressed this, enabling support for external 5G antennas, particularly for the n78 (3.5GHz) band . modem inside performed exceptionally well with the 2021