| Tool Name | Type | Best Feature | Price | | :--- | :--- | :--- | :--- | | | Software | Free, Raw access | $0 | | Chimera | Software | One-click repair, Cloud database | ~$20/mo | | Octoplus Box | Hardware | Can unlock bootloader & repair in EDL mode | ~$200 (Box) | | Z3X Samsung Tool | Hardware/Software | Samsung-specific IMEI repair without root | ~$100 |
Once you confirm the issue by dialing *#06# and seeing zeros or a blank IMEI, the standard solution is to restore a previously backed-up QCN file using a dedicated tool.
Modifying the contents of a backup QCN file to match a specific device. qcn imei repair tool
Understanding QCN IMEI Repair Tools: A Complete Guide to Restoring Network Connectivity
Hard-bricked devices (dead boot). Price: $200+ (requires physical dongle). Compatibility: Almost everything. | Tool Name | Type | Best Feature
Modifying IMEI numbers is illegal in many countries if it is done to bypass network restrictions or for fraudulent purposes. Always use this tool for repairing your device's original IMEI, as found on the original box or device sticker.
A is a specialized utility used to restore or modify the IMEI (International Mobile Equipment Identity) and network calibration data on Qualcomm-based Android devices . These tools work by manipulating QCN (Qualcomm Calibration Network) files, which reside in the device's EFS partition and store critical identifiers and radio frequency (RF) parameters. What is a QCN File? Price: $200+ (requires physical dongle)
Solution : Your baseband firmware may also be corrupted. Try re-flashing the complete stock firmware for your device model and region.
For the average user, future IMEI repair will require sending the phone to a professional with an "authorized EDL tool."