Firmware is the operating system of your router. It controls how the modem talks to the cell tower, how the Wi-Fi radios broadcast signals, and how the user interface (UI) manages security settings.
If you bought your VN007 from a telecom provider (e.g., a T-Mobile or EE branded unit), it runs carrier firmware. This is the most restrictive type. It often hides the ability to change APNs, select bands manually, or access advanced admin settings. vn007 firmware
Disclaimer: Modifying firmware may void your warranty and could violate carrier terms of service. Proceed at your own risk. Firmware is the operating system of your router
If your device supports it, this is the safest route. This is the most restrictive type
Early firmware crashed when connecting to 5G SA towers. Newer firmware introduces optimized n78 , n41 , and n28 band handling, dropping disconnection rates by nearly 90%.