Use software like ASProgrammer or the CH341A Programmer tool to write the data.
A reliable repository for "China LED" boards like the MSD309B series. How to Use the Dump File Download DUMP STREAM LED 42L33 carte mere msd309b t9b BIN
Local forums that specialize in Stream System hardware. Use software like ASProgrammer or the CH341A Programmer
To ensure you find the correct compatible BIN file, verify these hardware details against your specific unit: Download DUMP STREAM LED 42L33 carte mere msd309b t9b BIN
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.
Stream (often Stream System, popular in Algeria and North Africa). Model: 42L33. Mainboard (Carte Mère): MSD309B-T9B.