Schematic package for the Xiaomi Redmi S2, also sold as Redmi Y2, carrying the internal codename ysl. Although catalogued under firmware, the name indicates circuit diagrams packed in a 17.0 MB ZIP archive. Technicians use such phone schematics to follow power rails from the PMIC, trace charging, display and camera connector lines, and identify components when hunting a short. Extract the archive and open the contents in a PDF viewer, and confirm the board revision printed on the PCB before trusting part references.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →