Archive for the original Xiaomi Mi 2 phone, packed in 7z format at about 1.81 MB. The name identifies only the model, not the content, so unpack it with 7-Zip to find out whether it holds schematics, a component layout or other service notes. The size points to documentation rather than a full ROM. Such repair references are used to locate parts, trace voltage rails and signals, and find test points when tracking a short or a missing supply, provided the board version inside matches the handset being repaired.
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 @esquematicosdecelulares. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.