Most of these "free" tools only patch the display of the IMEI, not the actual hardware certification.
If you prefer not to use third-party "one-click" software, you can perform a manual repair using official diagnostics drivers: qlm imei repair tool v102 better free tool all qualcomm link
: Primarily supports Qualcomm CPUs for dual IMEI repair. Most of these "free" tools only patch the
: Load a compatible QCN file or enter the device's original IMEI, then click "Repair" or "Write". Important Safety & Legal Considerations Important Safety & Legal Considerations : The tool
: The tool generally supports Windows XP through Windows 10 (both 32-bit and 64-bit). Where to Find and Download
QLM IMEI Repair Tool v102 is a utility designed for mobile technicians to restore the original IMEI of Android smartphones powered by Qualcomm chipsets. While it is often shared as a free tool in the GSM community, it is primarily intended for educational or restoration purposes after firmware corruption. Key Features & Capabilities IMEI Writing/Repair