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These versions introduced better carrier aggregation (CA) logic, allowing the router to "combine" multiple LTE and 5G bands more effectively for higher speeds. zte mc801a firmware 2021
2021 updates improved the logic for switching between internal antennas and external TS-9 ports. Key Versions and Regions Navigate to > Update or Device Information
Early 2020 versions often suffered from random reboots or 5G signal dropping. The 2021 patches resolved these core stability issues. zte mc801a firmware 2021
Many 2021 versions still allowed users to access "hidden" settings, such as manual band selection and bridge mode, which some later ISP-branded updates have locked.