ZIP archive for the Redmi K30 4G version, 966 KB, indexed under firmware, though the name does not specify whether it holds a flash image, schematic or other service material. The small size makes a full phone firmware unlikely and points toward documents such as diagrams. Extract the contents and identify them before use. If it is a schematic, it helps trace power rails, charging paths and connector pinouts; keep in mind the 4G and 5G K30 models are different boards, so confirm you have the correct variant.
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 →