Xiaomi Redmi 5 repair package containing, according to its name, a schematic diagram and service manual, compressed as a 2.45 MB RAR and catalogued as firmware.

Circuit schematic for the Xiaomi Redmi 1S, an early Redmi model, in a 6.05 MB 7z archive with no board number given in the name.

Xiaomi Redmi 3s schematic collection, code name land, delivered as a fairly large 32.7 MB ZIP archive that is filed under firmware in the index.