adb shell su setprop sys.usb.config diag,adb
As we progress through 2026, several trends are shaping the landscape of IMEI repair:
Based on technical performance and community reviews, here are the leading options that do not require a hardware box:
| Tool Name | Chipset Support | Ease of Use | Special Features | | :--- | :--- | :--- | :--- | | | Qualcomm, MTK, SPD | Medium | Batch operations, FRP removal, Offline use | | Mysterious-Dev Tool | Qualcomm, Mediatek, Unisoc | High | Multi-brand, QCN backup/restore, Xiaomi repair | | Extra Tool | Qualcomm, MTK | Medium | IMSI/IMEI repair, Cert Fail Fixes, VoLTE enable | | Infinity CM2QLM | Qualcomm | Medium | Uses Generic Loaders, Factory Firmware packages | qualcomm imei repair tool without box
Watch how to use a boxless Qualcomm repair tool to restore an IMEI number via Diag mode: Qualcomm imei repair tool without box YouTube• Dec 3, 2019 Comparison of Popular Boxless Methods
Restart your mobile device. Dial *#06# on the phone keypad to confirm your network identity is fully restored. 🔍 Troubleshooting Connection Errors Primary Root Cause Corrective Action Missing or incorrect system drivers.
Always backup before writing. Use NV Backup Tool within QPST. adb shell su setprop sys
Enter the original IMEI number(s) from the phone's sticker or box. Click or Write .
Do not attempt unauthorized IMEI modification. If you have a legitimate need (e.g., motherboard replacement, software corruption), consult an authorized service center. For research, study Qualcomm’s secure boot chain and RPMB – but do not test on a device you aren’t willing to permanently brick.
The phone's bootloader might be locked, or secure write protection is enabled. Ensure you have properly wiped modemst1 and modemst2 or verified root authorization. Always backup before writing
This often means the EFS partition is corrupted. Restoring a generic QCN might not work; you need a QCN from the exact same model.
: A simple, lightweight utility specifically for writing IMEI 1 and IMEI 2 to Qualcomm devices once they are in Diag Mode. Chimera Tool (Digital License)
A widely used free utility for basic IMEI writing via Diag port. ⚠️ Legal and Technical Warning