Bip39 entropy to mnemonic https://edgargvkh682.theburnward.com/a-novice-s-overview-to-getting-a-bip39-mnemonic-expression Even though it utilizes BIP32 technique you'll be able to continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There's BIP44 Model which some wallet use for that era of seeds. It can be very simple — if you don't worry about https://gravatar.com/sparklyusually6089a4f337