Bip39 Hash Default range of iterations used in wallets is 2048. Rising this range should help it become safer against brute force attacks, on the other hand you will have to shop this worth. To obtain your wallet with custom PBKDF2 you need to use this script (or related) to https://bookmark-nation.com/story18382109/bip39-checksum-calculator-5-easy-facts-about-seed-phrase-generator-described