To update your Hisense TV firmware via USB, you generally need to download the specific update file for your model from the official support site and use a FAT32-formatted drive. Preparation
Look for a file ending in .pkg, .bin, or .zip (the actual update file). hisense firmware update usb
Plug the USB drive into the USB 1 port (or the port marked for service/updates) on the back or side of the TV. To update your Hisense TV firmware via USB,