Always ensure you are using the correct regional firmware and, whenever possible, attempt to repair the original calibration data rather than replacing it with a donor file.
Restoring a QCN file usually involves professional service tools or specialized software: Enable Diag Mode poco x4 pro 5g 128gb qcn tested7z free
: You must use a QCN editor to replace the generic IMEI in the downloaded file with your device's original IMEI found on the box. Writing another device's IMEI is illegal in many regions. Always ensure you are using the correct regional