Format a USB drive to FAT32 and copy the extracted file to the root directory.
Do you have the of your KIVI TV to verify if this is the correct version for your specific hardware? Software - KIVI
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: 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.
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. Format a USB drive to FAT32 and copy
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
Smart TV . This file appears to be one segment (part 8) of a larger firmware package designed for the chassis. Official and Safe Acquisition The safest way to obtain the correct software
Ensure you have the exact match for your model and screen resolution (