The is one of the most popular 5G indoor routers globally, known for its high-speed performance and reliability. However, its performance is heavily tied to its firmware , which can vary significantly depending on whether the device is unbranded (generic) or tied to a specific carrier like Three , Vodafone , or Elisa .
| Issue | Likely firmware cause | Possible solution | |-------|----------------------|--------------------| | Frequent reboots | Old B13/B14 | Update to B16+ | | Wi-Fi 6 devices disconnect | Driver bug | Disable AX mode or update to B19+ | | Can't change APN | Carrier lock | Try manual via telnet (if not patched) | | Bridge mode missing | Firmware limitation | Use DMZ or double NAT, or downgrade (risky) | | No 5G after update | Band/SA setting reset | Factory reset → reconfigure APN | zte mc801a firmware
are often pushed automatically by network providers (such as Three UK or EE), but they have been known to cause specific issues: ZTE MC801A Go to product viewer dialog for this item
This update famously "broke" Bridge Mode for many users, causing the router to issue incorrect IP addresses to connected downstream routers. [ ] Backup your current configuration (export settings)
It is critical to keep firmware updated to protect against known exploits. For instance, specific versions like mc801a_elisa3_b19 have tracked security profiles on CVE Details . 2. How to Check and Update Firmware