Archive tagged as firmware for the Xiaomi Redmi K30 4G, compressed with 7z to roughly 939 KB. That size cannot contain a full Android ROM, so expect a loader, partial image, script or service document; extract it with 7-Zip to confirm. No version, build or region appears in the name. The 4G and 5G K30 variants use different platforms, so keep this file to the 4G handset only, and back up existing partitions, especially calibration data, before any write operation with a flashing tool.
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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →