If you find the official firmware file (usually in .bin or .zip format, not typically .rar ), follow these general steps:

: If the TV won't power on normally, some models require holding the Power button while plugging in the AC cord to trigger a USB update. Specifications Note The LC-22LE520M

: Sharp provides a Display Firmware Update Tool that can automatically locate and download verified firmware for supported networked models. Manual Installation via USB

is an older 22-inch Full HD LED-backlight TV primarily marketed in regions like the Middle East. Because of its age, official firmware updates may no longer be actively released. If the official site doesn't list a download, the existing version is likely the final one. LC-22LE520M (WH)-LCD TV > 46 inch - Sharp Electronics