Firmware Update

A Firmware Update is the process of installing new low-level software on a hardware wallet. This software, called firmware, runs directly on the device's microcontroller. Manufacturers release updates to fix bugs, enhance security, or add support for new cryptocurrencies.

Users perform a firmware update by connecting the hardware wallet to a trusted computer via USB. They download the official updater tool and firmware file from the manufacturer's website. The tool verifies the firmware's digital signature to confirm it is authentic and untampered. It then erases the old firmware and installs the new version. The process often requires entering the device's PIN and may temporarily wipe user data, so back up your recovery seed first.

Firmware updates matter greatly in cryptocurrency security. Hardware wallets store private keys offline, but vulnerabilities in outdated firmware can allow attackers to extract keys during physical access or via malware. Updates patch these flaws, add defenses like secure element improvements, and enable features such as multi-signature support. Skipping updates risks fund loss.

Key characteristics include cryptographic signing to prevent malicious updates and version rollback options on some devices. Types vary: major updates add features, minor ones fix bugs. Always use official sources; third-party firmware poses high risks.

• Example: Ledger Live prompts users for firmware updates on Nano S or Nano X devices.
• Synonyms: device update, software update.