With the TV off, insert the USB. Hold the physical power button on the TV and plug it into power. Release the button when the update screen or LED blinks appear.
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:
Format a USB drive to FAT32 and copy the extracted file to the root directory. Download RT2861V09 3840x2160 16G Kivi 49UP50GU part08 rar
Smart TV . This file appears to be one segment (part 8) of a larger firmware package designed for the chassis. Official and Safe Acquisition
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. With the TV off, insert the USB
Do you have the of your KIVI TV to verify if this is the correct version for your specific hardware? Software - KIVI
If you successfully download the complete set of files (all parts must be present to extract), the typical update procedure via USB is: This file appears to be one segment (part
), as using the wrong firmware can permanently damage the display.