Haier LE22T900, Service Manual, Page: 42 / 59

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7.2 Firmware and DDC Instruction
Step 1: Ready for F/W Upgrade
1.1 Prepare a USB disk (The file system of USB disk must be FAT16 or FAT 32).
1.2 Copy the file of F/W from your computer to the USB disk root directory, and remove it from computer’s
USB port!
Step 2: F/W Upgrade
2.1 AC on (Power plug)
2.2. Plug the USB disk on the USB port on the side I/O port of TV.
2.3 TV AC power off -> AC power on
2.4 Into CSM menu
（
menu+recall
）
2.5 choose the option of “USB update”, choose the option of “image”
2.6 TV will upgrade by itself after detect the USB disk.
2.7 After finish upgrade process, TV will reboot by itself.
2.8 TV AC power off ,Remove USB disk from TV.
2.9 Check if the software version is correct.
2.10 please do factory reset in user menu.
2.11 Reset finish, AC OFF.