i made the silly mistake of sending btc from my cold wallet to a retail store. plus, ledger question.

a few days later, after reading about s.one whose trezor got hacked, i bought a new ledger device and dumped all my btc to it. that'll stay freezing cold.

question: will it ever again be safe to use the old ledger device as cold storage? is it possible to get a new seed phrase for an existing device? would that help make it more secure?

thank you.