Can a hardware wallet firmware update alone make existing Bitcoin quantum-safe?

Not by itself. The Bitcoin network must recognise a suitable post-quantum spending method; hardware support is only one component.

The answer

Not by itself. The Bitcoin network must recognise a suitable post-quantum spending method; hardware support is only one component.

What to do next

Watch actual protocol deployment and wallet support rather than marketing claims.

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Trezor hardware wallet

A current-generation hardware wallet for managing keys; it does not make Bitcoin or Ethereum quantum-resistant or resolve a future protocol migration.

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