Always save a backup of your original corrupted dump before flashing the new one. This allows you to revert if the new file is not a perfect match for your panel. CHINA LED TV 32L31F, MSD309B-T9B - KenotronTV

You must either desolder the 8-pin flash chip from the motherboard or use an SOIC8 test clip to connect the programmer directly to the chip while the TV is unplugged.

Use software like ASProgrammer or the CH341A Programmer tool to write the data.

Stream (often Stream System, popular in Algeria and North Africa). Model: 42L33. Mainboard (Carte Mère): MSD309B-T9B.

Local forums that specialize in Stream System hardware.