Sparrow Wallet has released version 2.5.5, patching several defects identified during a recent security review. The update adds stricter PSBT (partially signed Bitcoin transaction) signature validation, Silent Payment output verification and support for BitBox02, Jade, Krux, Trezor and Ledger hardware wallets. It also tightens Coldcard multisignature import restrictions, improves chain-reorganization handling, protects sensitive data in Trezor debugging logs and introduces a system theme that follows the operating system's light or dark mode. The specific nature and severity of the fixed vulnerabilities were not disclosed. Developer Craig Raw signed and published the release on September 17, and hardware wallet manufacturer COLDCARD endorsed the announcement.