Official Sony Xperia Xz So-01j -docomo Japan- Stock Rom |best|

Sony uses (Flash Tool Format) for stock firmware.

Will this remove SIM lock? A: No – stock ROM does not unlock carrier lock. Use a valid unlock code separately. Official Sony Xperia XZ SO-01J -Docomo Japan- Stock Rom

Check current firmware:

If the device is stuck at Sony logo, bootlooping, or shows "Device corrupt": Sony uses (Flash Tool Format) for stock firmware

Ensure the phone has at least 50% battery to prevent shutdown during the process. Enable USB Debugging: Settings > About Phone Build Number 7 times, then enable "USB Debugging" in Developer Options 3. Downloading the Stock ROM Official Sony Xperia XZ SO-01J -Docomo Japan- Stock Rom