Press and hold the Power button on the TV (not the remote) while plugging the power cord back in.
Ensure the firmware matches your panel (usually HD or Full HD). 2. Where to Download the Backup File Software backups for older models like the Download Haier LE39B50 Software Backup rar
Use WinRAR or 7-Zip to extract the .bin or upgrade_loader.pkg file from the downloaded archive. Press and hold the Power button on the
Using a computer to "write" the backup .bin file directly to the TV’s EMMC or Flash memory chip. MSTV3905Y-J8 or MST6M182 ).
Connecting the programmer to the TV's VGA or HDMI port (ISP mode).
Open the back of the TV and look for a code printed on the green mainboard (e.g., MSTV3905Y-J8 or MST6M182 ).