Always match the first four numbers of your serial number (found on the back of the box) with the firmware version provided by the manufacturer.
If you have obtained a firmware file (typically from the seller), use these general steps found in standard ATSC converter box interfaces: Use a USB flash drive formatted to FAT32 . zjbox firmware
ZJBox Firmware: Overview and Support Guide The firmware on ZJBOX Digital TV Converter Boxes Always match the first four numbers of your