Turn on the power. The standby indicator light (LED) should start flashing (usually red and green).
Once successfully upgraded, the T.vst29.03 performs admirably for its price ($10-$15). Key metrics post-upgrade: T.vst29.03 Firmware Upgrade
Once the LED stops flashing or changes color, the update is finished. Remove the USB drive and restart the TV. Troubleshooting and Tips Turn on the power