: The phrase "firmware download better" is vague. I'll assume you mean: "How to more effectively, safely, and reliably download the correct firmware for the DS-2CD1021-I camera."
Navigate to the camera's configuration page, usually under "Maintenance" or "System Tools." There will be an option for firmware upgrade. Select the .bin file you extracted and initiate the update. ds2cd1021i firmware download better
Firmware is often region-specific (e.g., International, European, or North American). Installing the wrong regional firmware can "brick" your device or change the language to one you don't understand. Where to Download : The phrase "firmware download better" is vague
Ensure your computer is connected to the same network as the camera. Also, have a stable power supply connected to the camera to prevent interruptions during the update. ds2cd1021i firmware download better