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While firmware plays a vital role in securing hardware wallets, it is not the only factor that matters. Physical security, side-channel attacks, and other vulnerabilities can also compromise these devices. Ultimately both hardware and software defenses are crucial - a flaw in either enables assets theft.
ographic operations can also unveil secrets and no one vulnerability rules them all.
Rather, hardware and firmware security intertwine inextricably. Though firmware drives functionality, physical tamper-resistance and side-channel protections remain critical. Perhaps firmware deserves more weighting given its flexibility in updating vulnerabilities. Yet a weak security modulus still renders firmware updates meaningless.