The ZTE MC801A has multiple variants (e.g., MC801A-1, MC801A-2, MC801A-3). Firmware is between them.
Some firmware versions enable hidden features, such as: zte mc801a firmware flash
If you flashed generic firmware and lost your carrier-specific IMEI or your SIM is no longer recognized: The ZTE MC801A has multiple variants (e
If you are not experiencing a specific problem, just for fun. The MC801A has no known universal "unbrick" method, and many users have permanently disabled their routers with incorrect files. zte mc801a firmware flash