: Sites like GSM-Forum (Martview) or XDA Developers often have user-uploaded QCN files for specific Redmi models (e.g., Redmi Note 10, 11, or 12).
: Before writing any new QCN file, use a tool like QPST or UMT to back up your original QCN. Download Redmi eng Patched qcn
Since there isn't a single "piece" or central official repository, you can typically find these files on mobile repair forums and specialized tool sites: : Sites like GSM-Forum (Martview) or XDA Developers
: Always search for the file using your device's specific codename (e.g., "Redmi Note 11 Spes Eng Patched QCN"). Redmi Note 10