The safest "link" is the internal server connection built into your device. You do not need to download a manual file if you use the Web GUI portal. Step-by-Step: Updating ZTE MU5001 Firmware
: The safest way to update is via the device's web interface (usually 192.168.0.1 ). Go to Settings > System > Software Update . ⚠️ Warning: Buggy Firmware (V1.0.0B02) zte mu5001 firmware link