To install the stock ROM on a Japanese Sony Xperia device, you typically need the following software on a Windows PC: XperiFirm
If you are using the phone on Docomo’s network (or an MVNO like IIJmio or Rakuten Mobile), the stock ROM ensures VoLTE (Voice over LTE), Wi-Fi calling, and visual voicemail work correctly. These features almost never work on generic or custom firmwares. Official Sony Xperia XZ SO-01J -Docomo Japan- Stock Rom
until "Flashing finished" appears. Disconnect and power on. To install the stock ROM on a Japanese
Share your thoughts and experiences with this ROM in the comments below! Have you already flashed this stock ROM? What do you think of the Xperia XZ's performance? Official Sony Xperia XZ SO-01J -Docomo Japan- Stock Rom
Lou Zocchi, the author of numerous wargames, author of the RPG Superhero 2044, designer of the miniature wargame Starfleet Battles and the inventor of the 100-sided Zocchihedron has passed. One of the foundational greats of the game industry, he will be greatly missed.