Schematic for the Poco F3, code name alioth, filed as firmware although the name describes circuit diagrams, in a RAR of about 2.13 MB. Alioth is Xiaomi's device code also used for the Redmi K40. Technicians use such drawings to trace power rails, check the charging path, read flex connector pinouts and pin down shorted components. Open the extracted pages with a PDF viewer, and confirm the board matches the alioth hardware before trusting component positions or values.
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 @mischematic. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →