To ensure you get the exact version for your device, you should follow these steps:
Installing the wrong firmware version can "brick" your TV. Always verify that the firmware matches your specific panel and board ID exactly before flashing. Download RT2851V09 3840x2160 Kivi 55U730GU part15 rar
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 To ensure you get the exact version for