A BIOS / firmware dump. Shared as “TCL_model_L42E9FBDMS68_MB_MST6M69_flash_EN25P64_panel_t_con.rar” — a .rar file, 3.09 MB.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ShareMan_Electronic_Files. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →