Bip39 Brute Force Github. While it employs BIP32 system you'll be able to still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 Edition which some wallet use to the era of seeds. Passphrase values are stored inside the /.tmp.tmp file to the MicroSD card. https://dominickdrevi.wikikali.com/1003045/the_anatomy_of_a_bip39_phrase_entropy_phrases_and_security