Look for this word or the characters 言語選択 (Language Selection).

Upon reboot, some models offer a one-time language selection screen. Look for "English" or the character 英 immediately after the "Caution" screen appears.

There are some third-party services and enthusiasts in the JDM community who offer "conversion" SD cards that can translate parts of the menu into English. Be cautious with these, as they are unofficial and can be expensive. 4. Hardware Replacement