The "v7tf3" portion could be a board model, chipset code (e.g., Realtek, MediaTek, or Texas Instruments), or an internal project name.
Ensure you have extracted the .bin file from the .zip archive. Some users mistakenly upload the .zip file itself to the router. v7tf3-16 firmware download
Select or Network depending on your exact card classification. The "v7tf3" portion could be a board model, chipset code (e