If you have already acquired the full set of .rar files (part01 through part04) from a third-party technician forum or collection:
: Format a USB drive to FAT32 . Copy the extracted firmware file directly to the root of the USB (not inside any folder). Flash Firmware : Turn off the TV and unplug it from power. Insert the USB drive into the TV's USB port. Download Haier LE55U6500UAG Firmware part04 rar
: Connect your TV to the internet. Navigate to Settings > Device Preferences > About > System Update . If an update is available, follow the on-screen prompts to download and install it automatically. If you have already acquired the full set of
: For manual firmware files, contact Haier Support or email songyang.dpg@haier.com for assistance specific to your model. Manual Installation Steps (If using .rar files) Insert the USB drive into the TV's USB port
Release the button once the update progress bar appears on the screen.
Plug the TV back into power while continuing to hold the Power button.