Blockstream Jade Bip39 Default range of iterations used in wallets is 2048. Increasing this amount must help it become safer against brute power attacks, even so you'll need to store this value. To obtain your wallet with customized PBKDF2 you must use this script (or very similar) to work out https://socials360.com/story8839335/bip39-dart-indicators-on-seed-phrase-generator-you-should-know