Connect to your PC and type: adb shell , then su , then setprop sys.usb.config diag,adb .

Found in the Developer Options of your Android device.

A 2025/2026 updated utility that supports various Qualcomm-based brands like Infinix and Techno.

Several free and paid software tools allow for IMEI repair without requiring a physical box or dongle: Write Dual IMEI Tool

: A critical feature is the ability to read, backup, and restore QCN (Qualcomm Calibration Network) files. Tools like QFIL allow you to edit the IMEI within a QCN backup and flash it back to the device.

While professional repair technicians rely on hardware boxes for their safety features and broad compatibility, it is entirely possible to repair a Qualcomm IMEI without one. Tools like QCN Rebuilder, QFIL, and various standalone utilities provide a cost-effective alternative for enthusiasts.