Rooting or modifying system files can corrupt the EFS (Encrypting File System) folder. Without a TWRP backup of EFS, QCN restoration is your last hope.
Here are the typical features of such a tool (based on common tools like QPST, Ultimate QCN Tool, or IMEI Rewrite Tools ): Imei Qcn Tool Download
Once the process finishes, restart the device to apply the changes. Safe Download & Legal Disclaimer Rooting or modifying system files can corrupt the