While holding the button, plug the TV back into the power outlet.
The is a common motherboard/chassis used in various brands of 4K Ultra HD Smart TVs (often referred to as "China Mainboards" or used by brands like Smart-Tech, Skyworth, or Noble Skiodo). The specific file RT2861P839 3840x2160 Clever55 part4 rar is a compressed firmware update for a 55-inch panel with a resolution of 3840x2160. Firmware Details Mainboard Model : RT2861P839 Resolution : 4K UHD (3840x2160) Screen Size : 55-inch (Clever55) File Format : .rar (Multipart archive) How to Prepare the Firmware Download RT2861P839 3840x2160 Clever55 part4 rar
Because the file is labeled "part4," it is part of a . You must have all parts (part1, part2, etc.) in the same folder to extract them successfully. Download all required parts of the RAR archive. While holding the button, plug the TV back
Copy the extracted firmware file directly to the of the USB drive (do not put it inside a folder). Installation Procedure Firmware Details Mainboard Model : RT2861P839 Resolution :