Do you have the from the sticker on the back of your screen so I can help you find the exact file match?
: Sites like Kazmi Elecom and Labone TV host extensive databases of .bin firmware files for CV920E-A42 and CV920H-U42 boards. cv920e42 firmware download install
Once the blinking stops or the TV reboots to the setup screen, remove the USB drive. Do you have the from the sticker on