Ledger Bip39 Passphrase Default number of iterations used in wallets is 2048. Growing this variety ought to ensure it is safer versus brute force attacks, however you will need to keep this worth. To entry your wallet with tailor made PBKDF2 you should use this script (or very similar) to https://my-social-box.com/story3970885/bip39-xmr-seed-phrase-generator-no-further-a-mystery