. Even if the intent is to repair a broken device, changing the ID to match another phone is considered a criminal offense because it is a technique used to bypass "blacklists" on stolen hardware. Always ensure you are attempting to restore the IMEI found on the phone’s box or SIM tray. Conclusion
The EFS is a dedicated area in the phone’s internal storage that holds critical radio frequency and IMEI data. Rooting Gone Wrong: repair imei sony xz3
If you backed up your TA partition before unlocking the bootloader or rooting, restoring that backup is the only way to recover your original device keys and IMEI integrity. Legal and Ethical Warnings In many jurisdictions, including the US, UK, and EU, altering an IMEI is illegal Conclusion The EFS is a dedicated area in
Professional technicians use hardware boxes or specialized software suites (like Chimera Tool or S-Unlocker). These tools interface with the Qualcomm Snapdragon 845 chipset inside the XZ3 to rewrite the hex values of the EFS partition. Restoring TA Backups: These tools interface with the Qualcomm Snapdragon 845
tool on a PC, you can perform a "Software Repair." This re-installs the factory firmware and can often restore a "hidden" or temporarily masked IMEI if the underlying data isn't permanently deleted. Specialized Service Tools:
Repairing a Sony XZ3 IMEI is rarely a simple DIY task. If a standard factory reset or a "Software Repair" via Xperia Companion does not work, the issue likely involves hardware-level encryption or a corrupted TA partition. In such cases, seeking a professional technician with authorized Sony service tools is the most reliable and legal path forward. "Software Repair" feature?