this page you will find the firmware link to download the firmware for Sony xperia z3-so-02g docomo unlockd pattern lock pin lock face lock frp lock all unlockd erase all user data and remove all praivcey lock operating system of this firmware is android 7.1
Model Sony xperia z3-so-02g docomo country all OS version android 7.1
File Name SSO 02G 23.1.B.1.197 1290 9050 R10C.zip File sise 1.52 GB Country all Version Android 7.1 sony flashtool-0.9.18.1 for window Sony xperia z3-so-02g docomo firmware download by mobilexpert Download