: Usually MTK661.bin or upgrade_loader.pkg (though the exact name varies by motherboard).
: The standby light (LED) should start flashing rapidly, or an "Upgrading" bar will appear on the screen. Do not turn off the power during this time. Download Firmware Haier LE24B600 USB rar
: Ensure the firmware matches your specific motherboard version (e.g., TP.VST59.P83). Using the wrong firmware can "brick" the TV, making it unbootable. : Usually MTK661