The firmware you are looking for for the TV (board HK.T.RT2851V09
Visit the KIVI Software Page and enter your TV's serial number (the characters after "KIVI" on your device label) to access the correct firmware files .
If you have all parts of the archive, extract them using a tool like WinRAR (starting with part 1), place the firmware on a FAT32-formatted USB drive, and follow the standard Smart TV update procedure through the TV's "System Update" menu .
To ensure you get the exact version for your device, you should follow these steps:
Do you have the of your TV handy to confirm if this specific file version is the one you need? Kivi 55u730gu Main Hk.t.rt2851v09 Trouleshooting - Scribd