Plug the drive into the USB port of your DVB-T2 box.

If you have a firmware file from a (ideally the seller who sold you the box), here is the standard method:

The most critical rule is to use firmware specifically designed for your exact hardware version . Firmware for a 1509_DVBT2_512M might not be compatible with a different board revision. Using the wrong file can permanently damage your device. Always check forums, manufacturer sites, or seller resources for files matching your specific hardware version.