JJOS is developed independently of Akai. While basic versions are free, advanced versions require a one-time purchase to unlock full functionality.
John the Ripper, commonly referred to as John, is a fast password cracker, primarily for use with Unix systems, but also supporting a variety of other platforms. It is one of the most popular password cracking tools used both by cybersecurity professionals to test the strength of passwords and by attackers to gain unauthorized access. jjos password crack
If you cannot remove the CF card or lack a hex editor, you can attempt a brute-force attack over MIDI. JJOS accepts password entry via virtual keyboard on the MPC screen, but it also (in some versions) accepts SysEx (System Exclusive) messages over MIDI. JJOS is developed independently of Akai