The first boot after a fresh flash can take anywhere from 5 to 10 minutes as the system initializes.
For the SO-01J, a community guide on XDA describes the process to root, install TWRP, and apply a DRM fix for Oreo 8.0 (build 41.3.B.2.2) after unlocking.
Whether your phone can still boot into (blue/green LED)?
If you need an unlockable Xperia XZ, buy the F8331 global version. Official Sony Xperia XZ SO-01J -Docomo Japan- Stock Rom
While holding the button, plug the USB cable into your phone.
23MP rear camera with Triple Image Sensing technology and a 13.2MP front selfie camera. Durability: IP65/IP68 water and dust resistance. Firmware and Recovery For users looking to manage or restore their device: Official Downloads: Open source archives and manual details can be found on Sony's Developer Portal NTT DoCoMo Support Page Standard Recovery: A soft reset can be performed by holding the buttons simultaneously. Third-Party Databases: Repositories like Xperia Stock ROM
| Specification | Details | |---------------|---------| | | SO-01J | | Base Global Model | Sony Xperia XZ (F8331/F8332) | | Carrier | NTT Docomo, Japan | | OS (Original) | Android 6.0.1 Marshmallow | | Latest Official OS | Android 8.0 Oreo | | Security Patch Level (Final) | ~2019 (varies by build) | | Bootloader Status | Locked by Docomo (unlockable via official method with restrictions) | | ROM Type | Stock / Carrier-branded | The first boot after a fresh flash can
: FTF (Flash Tool Format) or extracted package via XperiaFirm Essential Prerequisites
The tool will automatically detect the SO-01J model, download the latest official Docomo firmware, and install it. Method 2: Using Newflasher / FlashTool (Advanced)
Android 6.0 (Marshmallow) up to Android 8.0 (Oreo) Flashing Tool: Xperia Companion, FlashTool, or Newflasher Prerequisites for Flashing If you need an unlockable Xperia XZ, buy
Charge your phone to at least 50% to prevent unexpected shutdowns.
2025 Best for: Repair, restoration, or returning device to Docomo specifications.
Specific modem software optimized for Japanese networks.
Flashing firmware and modifying your device are done at your own risk. Neither the author nor the sources referenced in this article are responsible for any damage to your device, data loss, or other issues that may arise. Always ensure you are using the correct firmware for your specific model and follow instructions carefully.
Install the Sony USB drivers and the .NET Framework. Extract Sony Mobile Flasher to a folder on your PC.