Archive for the TCL 32U557G television, 2.36 MB in RAR format. The file name carries the model only, with no indication of the board, flash chip or software version inside. Packages of this kind usually contain a main board memory dump or service information used during TV repair. Extract and identify the files first. When flashing, read and save the existing chip with a programmer, make sure the image size fits the chip, and confirm the main board and panel match the donor unit.
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 @hashmielecom. 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.