Ensure the power cable is secure. A sudden loss of electricity during a flash process corrupts the core boot sector of the TV chip.
Turn on your TV, navigate to Settings > System (or Support ) > About , and locate the line labeled Model or Model Name . Step 2: Prepare Your USB Flash Drive hisense firmware update usb
Check the to ensure it matches the new firmware version you downloaded. Troubleshooting Hisense Firmware Update Issues Ensure the power cable is secure