Bip39 Tool. You'd then do a basic Restoration by using a command just like the one underneath. (This command makes use of a sample wallet file bunlded with BTCRecover) No, there isn't a technological limit for the length of the passphrase. On the other hand, for the sake of memorability https://hubwebsites.com/story19931528/bip39-generator-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic