A highly reliable source for EEPROM and FLASH dumps. Search for "B.MTD21B" or "MTD21B" in their database.
Always read and save your current, corrupted firmware before writing the new one. Download DUMP DANSAT MTD21B 9242 rar
Based on technical forums, this TV chassis commonly uses a flash chip. Where to Download DANSAT MTD21B Dump Files A highly reliable source for EEPROM and FLASH dumps
Search their "TV LED LCD DUMP" section for Dansat or the chassis model. Download DUMP DANSAT MTD21B 9242 rar
Download the .rar or .zip file and extract the .bin or .hex file.
Use an EEPROM programmer like the CH341A USB Programmer to flash the file onto the 25Q32 chip.