✅ Download from a trusted forum (XDA, GSM-Forum) ✅ Verify file hash (MD5/SHA256) ✅ Run antivirus scan ✅ Backup your existing QCN before writing new one ✅ Use at your own risk — no developer warranty
The is a lightweight, portable Windows utility specifically designed to repair lost or "null" IMEI numbers on Android devices powered by Qualcomm Snapdragon processors . It works by allowing users to edit the IMEI information within a Qualcomm Communication Network ( QCN ) file—the file responsible for network calibration and device identity—and then "rebuild" it for restoration. Download QCN Rebuilder Tool (Latest Version) download qcn rebuilder tool for imei restore latest version
| Problem | Solution | |---------|----------| | “Failed to generate QCN” | Re-download tool; run as admin. | | IMEI still null after flashing | Ensure phone is in DIAG mode and drivers installed. | | No network after restore | Dial *#*#4636#*#* > Phone info > Set preferred network type to LTE/WCDMA. | ✅ Download from a trusted forum (XDA, GSM-Forum)