If you prefer not to use third-party tools, Sony recommends these official methods: Xperia Companion: Software Repair " feature in the Xperia Companion app to wipe the device and remove the lock. Google Find My Device:
Use the FlashTool software to build the FTF file from the downloaded firmware files.
Sony SOV33 Lock Remove FTF Top Guide: Master Flash Tool Recovery
: The user data partition that controls settings, apps, and lock screen security mechanisms.
So the likely meaning: Using an FTF firmware file to remove the carrier lock on an SOV33 Xperia XZ Premium .
Open FlashTool and click the lightning bolt icon ("Flash Mode"). button and connect the USB cable. Wait for the flashing to complete (about 5-10 minutes). Finish: