Downloading firmware from unofficial sources (like multi-part .rar files from forums) carries risks, including system instability or "bricking" your TV. The safest way to obtain the correct software is through official channels:
), as using the wrong firmware can permanently damage the display. Download RT2861V09 3840x2160 16G Kivi 49UP50GU part08 rar
Use the KIVI Software Support Page where you can enter your TV's serial number (found on the back of the device) to receive the exact, validated firmware for your specific model. If your model isn't listed or you have
If your model isn't listed or you have trouble with the serial number, you can Submit a Service Request directly to KIVI. Common Firmware Installation Steps Format a USB drive to FAT32 and copy
Ensure you have the exact match for your model and screen resolution (
All parts (part01, part02, etc.) must be in the same folder. Extracting part01 will usually combine them into a single file (often named MstarUpgrade.bin or similar).
Format a USB drive to FAT32 and copy the extracted file to the root directory.