Bip39 Default number of iterations used in wallets is 2048. Rising this number ought to help it become safer versus brute force attacks, nonetheless you will need to retailer this worth. To obtain your wallet with customized PBKDF2 you should use this script (or related) to determine your BIP39 seed https://socialwebleads.com/story3962512/bip39-backup-the-smart-trick-of-bip39-word-list-that-no-one-is-discussing