If you find a .rar file for this model, it is critical to verify its contents and origin to avoid "bricking" your television.

Valid firmware for this specific model often contains a file named zTVApp_Complete.zimage . If your .rar package contains a different file structure, double-check that it is intended for the LE730 series and not a similar model like the LE810.

The TV should automatically detect the software and prompt you to start the update. Select . Do not turn off the power during the update process.