You may need to search for the "HK.T.RT2841P631 Firmware" if your television experiences the following: The TV gets stuck on the logo screen. Black Screen: Backlight is on, but there is no image or UI.
Firmware for these Chinese-manufactured universal boards usually follows a manual "USB Force Upgrade" method: How to Update Your Motherboard BIOS Hk.t.rt2841p631 Firmware
Lab-One Inside : Provides links for various resolution versions. You may need to search for the "HK
For more information on Hk.t.rt2841p631 firmware, users can refer to the following resources: Hk.t.rt2841p631 Firmware
Try a different USB port or a different USB drive (some boards are picky about USB 3.0 drives).
A common "interesting" (and frustrating) quirk is the "circles of death" —where the TV hangs indefinitely on the Android loading animation .