Bip39 Backup Default number of iterations used in wallets is 2048. Rising this number must enable it to be safer against brute pressure assaults, having said that you will have to shop this price. To obtain your wallet with custom PBKDF2 you need to use this script (or related) to https://mypresspage.com/story3976677/generator-hunting-meaning-an-unbiased-view-of-seed-phrase-generator