Disclaimer: Repairing or changing IMEI numbers is illegal in many jurisdictions. Use these tools only for repairing corrupted original hardware data. Step 1: Enable Diag Mode
These are professional "dongle-based" tools. While they aren't free, they are much more powerful and can bypass many security protections that free tools cannot. How to Use an IMEI QCN Tool (Step-by-Step) Imei Qcn Tool Download
90% of failures are due to incorrect drivers. Ensure you have the Qualcomm HS-USB QDLoader 9008 or Diagnostic 901D drivers installed. Disclaimer: Repairing or changing IMEI numbers is illegal
Most Xiaomi, Vivo, Oppo, and generic Qualcomm devices. 2. Qualcomm IMEI Repair Tool While they aren't free, they are much more
If you have a blank QCN file from a donor device, you must use an or QCN Editor to input your device’s original IMEI (found on the back of the phone or the box). Step 4: Restore/Write QCN
This is the "official" suite used by technicians. It includes and Software Download , which are the primary utilities for backing up and restoring QCN files.