Bootloader Unlock Allowed No To Yes -

on Softbank) will help narrow down which tool works for you.

Changing Bootloader Unlock Allowed: NO to YES, Mt1... - Sony bootloader unlock allowed no to yes

: Sony devices use this status to protect proprietary DRM keys (required for certain camera features and high-definition video). Unlocking often permanently deletes these keys. Checking Status : On Sony devices, you can verify this by dialing *#*#7378423#*#* and navigating to Service info Configuration Rooting Status Can it be changed from "No" to "Yes"? on Softbank) will help narrow down which tool works for you