Provide these details, and I can give you custom troubleshooting steps or find the exact Diag Mode codes for your phone. Share public link
Some websites offer updated versions such as QCN File Editor Tool V1.0 (2025 release) , but the core "IMEI QCN Tool" has remained at v1.0 for several years due to its stable and simple functionality. Download Imei Qcn Tool V1.0 UPD
For more advanced QCN operations – especially restoring a full QCN backup – the IMEI QCN Tool is often used alongside and QFIL . Provide these details, and I can give you
If this QCN data becomes corrupted or overwritten (e.g., by flashing incompatible firmware, cross-region updates, or wrong modem configurations), the device may encounter severe malfunctions: loss of IMEI number, inability to register on a mobile network, unknown baseband version, inability to recognize a SIM card, or Wi-Fi and Bluetooth calibration issues. The IMEI QCN Tool v1.0 can repair the QCN file and restore the original IMEI in such situations, reviving network functionality without requiring a complete motherboard replacement. If this QCN data becomes corrupted or overwritten (e