This model typically uses a USB upgrade method. You will need to extract the .rar file and place the bin file in the root directory of a FAT32-formatted USB drive. Where to Find the Files
If the update completes but issues persist, perform a factory reset via the settings menu. Download Haier LE42B9000 Software Backup rar
Format a USB drive to FAT32 and copy the file directly to it. This model typically uses a USB upgrade method
Use Menu 1147 to access the service mode and verify the current firmware version and panel code before flashing. Download Haier LE42B9000 Software Backup rar