ZIP archive of 1.34 MB labelled LSY400HM02-A01, a code that resembles an LCD panel designation, though the name does not state the brand or the exact contents. It may hold T-con firmware, panel data or documentation, so extract it and check the files first. If a flash image is inside, read and keep the original chip contents with a programmer before writing, compare the panel marking on your unit and confirm that the image size fits the EEPROM or flash chip.
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 @gunvantrathore. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip