If the TV is stuck on a black screen or boot loop, the provides detailed power charts and voltage checks for components like the UP3D1 (3.3V) and U1D1 (1.0V) regulators.
: The TV should restart automatically once finished. Remove the USB drive and perform a factory reset via the settings menu to ensure system stability. Troubleshooting the RT2851V09 Mainboard
Download the provided files. If they are in multiple parts, ensure you have every part before attempting extraction. Installation Guide (USB Method) Download RT2851V09 3840x2160 Kivi 55U730GU part08 rar
Enter your TV's Serial Number (found on the back panel of the TV) to ensure the software matches your hardware revision.
The most reliable way to get the correct firmware for your specific device is through the . Step 1: Select your TV model () from the dropdown menu. If the TV is stuck on a black
Once you have the extracted firmware file (typically named MstarUpgrade.bin or similar), follow these steps to install it:
: Use a drive formatted to FAT32 . Copy the extracted firmware file directly to the root directory (do not put it inside a folder). Connect and Initiate : Power off the TV and unplug it from the wall. Insert the USB drive into the USB 2.0 port . Plug the TV back in. The most reliable way to get the correct
: Press and hold the Power button on the TV (not the remote) for 5–10 seconds until the standby LED begins to blink rapidly, indicating the update has started.