If you have a device from this era and want to verify the software:
If your device was provided by a specific carrier (like Three UK), it is "locked" to their firmware branch. You cannot easily flash generic ZTE firmware onto a carrier-branded device without risking "bricking" it or losing VoLTE functionality. zte mc801a firmware 2021
The was widely regarded in 2021 as a top-tier 5G router, specifically for its balance of performance and price compared to competitors like Huawei. However, the firmware experience in 2021 was a double-edged sword, often depending on whether you had a "stock" unit or a carrier-locked version (like those from Three UK or Telekom). Hardware vs. Software Performance If you have a device from this era
| 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. | However, the firmware experience in 2021 was a
Back in late 2021, the MC801A was in its prime, but updates were already starting to feel sporadic.
The most significant updates for power users arrived towards the end of 2021. These updates unlocked features that transformed the MC801A from a simple consumer box into a prosumer device.