Once completed, the TV will either reboot automatically into the initial setup wizard or return to a solid standby state. Troubleshooting USB Link Failures
This procedure is not for beginners. Incorrect wiring or shorts can permanently destroy the board. If you lack experience, it is far better to take the TV to a professional repair shop. tpsk506spb802 firmware usb link
There are several common scenarios where the USB firmware link is essential: Once completed, the TV will either reboot automatically