: Settings > Device Preferences > About > System Update > Upgrade from USB. : Settings > Support > System Update > Upgrade from USB. to begin the automated installation. Manual Forced Method (TV is "bricked" or boot-looping)
Here is the to get the correct USB firmware link for your Hisense TV: hisense firmware update usb link
Plug the USB drive into one of the TV's USB ports. : Settings > Device Preferences > About >
Otherwise, unzip the file and copy the .pkg or .bin file to the root directory. hisense firmware update usb link