Archive for the Xiaomi Mi 9T Pro, also sold as the Redmi K20 Pro, code name raphael. The name calls it a schematic, while the catalogue lists it under BIOS / firmware, so check the 1.01 MB ZIP after unpacking to see whether it holds circuit diagrams or firmware. As a schematic it serves to trace charging and power rails, find test points and isolate shorted components on this shared mainboard. Confirm the PCB revision of the unit matches the material before relying on it.
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 →