Consider:
fastboot flashing unlock
🟢 : You can proceed to Phase 3 using the official brand unlock channels. docomo unlock bootloader install
and enter *#*#7378423#*#* to access the service menu. Navigate to : Service info > Configuration > Rooting Status. Check "Bootloader unlock allowed" : Yes : You can proceed with standard unlock methods. Consider: fastboot flashing unlock 🟢 : You can