: This site often hosts USB-updateable firmware versions for this specific mainboard. You can check the HK.T.RT2938P639 FHD USB page .
: A reliable repository for TV firmware. You can search for the HK.T.RT2938P639 board specifically on the KenotronTV Files Section .
. Some models begin updating automatically, while others may require you to hold the Power button on the TV panel until the update indicator appears.
(typically 5-7 minutes) until the TV restarts on its own. Do not unplug the power during this process.
Installing incorrect firmware (e.g., matching the board but not the panel resolution) can lead to a "flipped" or distorted image. Always double-check that the resolution (1366x768) matches your TV panel's specifications.
While the exact process can vary, standard firmware updates for these boards usually follow this pattern: to FAT32.
contents directly to the root of the USB drive (do not put them in a folder). Insert the USB into the powered-off TV.