Docomo Sony SO-01J Xperia XZ Japan Kobe Steel Version Unlocked

If you live in Japan, flashing the official Stock ROM is often the only way to guarantee that features like SMS confirmation codes for banking apps or NFC payments work 100% reliably. Rooted custom ROMs often break SafetyNet/Play Integrity, rendering banking apps useless—a problem the official ROM does not have.

stock ROM has evolved through three major Android generations: : Released with Android 6.0 Marshmallow .

Sony Xperia XZ (SO-01J) is a Docomo-specific variant released in Japan. Installing its official stock ROM is useful for fixing bootloops, removing custom ROMs, or unrooting the device. NTTドコモ 1. Essential Tools