Cause: You relocked with modified system files.
Fix: This is a brick. You need to EDL (Emergency Download Mode) flash with an authorized account – a service center job.
You can ONLY relock if the device runs 100% stock firmware signed by the OEM, including the boot, recovery, system, and vbmeta partitions.
For the 167z variant, the bootloader unlocking capability is whitelisted. se bootloader unlocking relocking 167z verified
Your device might have a locked EMMC or a fuse blown by a previous unlock attempt. Some tools leave a log; search for "critical error."
If your device is showing a standard configuration (often referenced by codes like 167), you can proceed with the standard Sony unlock method. Cause: You relocked with modified system files
Step 1: Get the Unlock Code
Step 2: Unlocking
Connect your device via Fastboot and run:
fastboot oem unlock 0x[YOUR_KEY] You can ONLY relock if the device runs
Note: This process will wipe your data and traditionally delete DRM keys.
Cause: USB drivers or cable issues.
Fix: Use a USB 2.0 port, an original cable, and install Google USB Drivers.
No. Relocking always triggers a factory reset. Backup first.
| Pros | Cons | | :--- | :--- | | Official, free method available via Sony. | Permanent loss of DRM keys (X-Reality, Bravia). | | Verified working on 167z customization. | Noticeable degradation in camera quality (low light). | | Easy to flash TWRP, Magisk, and Custom ROMs. | Relocking is risky and requires strict stock firmware. | | Relockable (restores security status for resale). | Warranty is technically voided upon unlock. |