Schematic archive for the Xiaomi Redmi 3 handset, identified in the name by its code name ido, compressed into a 1.80 MB ZIP and catalogued under firmware. Despite that category, the title describes circuit diagrams rather than a flash image. Technicians use such sheets to trace rails coming off the power management IC, verify charging and USB paths, and identify filters, coils and connectors around a fault. Open the extracted PDF in any viewer, and make sure the board version on your device matches before relying on component 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 →