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5. Enter the seed phrase you saved from Blockchain.info then click next you can choose a password to protect your wallet.

-snip-

Blockchain wallet uses BIP39 so in addition to what you wrote in the 5th point, OP has to go to 'Options' and check 'BIP39' before clicking next:

Or you could export the wallet.aes.json backup and decrypt it, you will find xpriv which is the master key.

Wallet.aes.json? Didn't they stop allowing users to export their wallets a few years back when they upgraded?