If the patch sounds too unstable or you cannot find a working download, consider these options:
A full English translation patch for Cardfight!! Vanguard: Lock on Victory!! cardfight vanguard lock on victory english patch work
If the game boots but text is missing, you may have a bad ISO dump. Try a different region-free source. If the patch sounds too unstable or you
While there have been discussions and small projects started by fans on forums (such as GBAtemp), a full patch that translates the entire story and menu system into English has not been publicly released or finished by the major translation groups. cardfight vanguard lock on victory english patch work
Be careful not to confuse "English patches" with official technical patches.