Keep holding the power button until the "Software Updating" screen appears.
(often using TP.MS6486T series mainboards), the process requires a specific or .bin firmware file, not the RAR archive itself. Step-by-Step Guide to Updating/Restoring Download HISENSE 32N2170HW Firmware USB part2 rar
If the USB method isn't working, I can suggest alternative troubleshooting or next steps. HISENSE U7KQ (and more) DOWNGRADE FIRMWARE DOWNLOAD Keep holding the power button until the "Software
Copy the extracted .pkg or .bin file directly to the root directory of the USB drive. Do not put it in a folder. 3. Perform the USB Flash Procedure Unplug TV: Unplug the Hisense 32N2170HW from the power outlet and wait for 5 minutes. HISENSE U7KQ (and more) DOWNGRADE FIRMWARE DOWNLOAD Copy
Check the back of your TV for the sticker containing the Serial Number (S/N) and exact model details.
The process can take up to 15 minutes. The TV will restart automatically when finished. Key Troubleshooting
Press and hold the power button on the TV itself (or the red standby button on the remote) and plug the TV back into the outlet.