Specialized firmware repositories such as LCD-Repair-Guide.com or TCL Support (though official sites usually only provide USB update files, not low-level EEPROM dumps).
Unlike a standard software update, a "dump" cannot be installed via a USB stick in the TV's menu. It requires specialized hardware: You must use a device like an Go to product viewer dialog for this item. , Go to product viewer dialog for this item. , or CH341A programmer.
The "Download DUMP TCL LCD24D10 MT8223 MAJ2XG 25Q16BV rar " refers to a specific used for repairing the TCL LCD24D10