Plug the TV back in and press/hold the on the TV panel.
: Always run a scan using tools like Windows Defender or Malwarebytes before extracting. Download INTEX 3210 Software rar
Since the INTEX 3210 is a legacy model, your best bet for finding the official .bin file or software package is through trusted third-party firmware repositories or technician forums. Plug the TV back in and press/hold the on the TV panel