3rd quarter of 2026

Breaking change: LedgerJS deprecated in September 2026

In September 2026, the Ethereum app will drop support for signEIP712HashedMessage (the hashed / blind-signing variant of EIP-712). This removes the last working path for @ledgerhq/hw-app-eth, and all LedgerJS packages (hw-app-*, hw-transport-*) are deprecated from that date.

Applications that have not migrated to the Device Management Kit (DMK) by September 2026 will be unable to sign EIP-712 typed data on Ledger devices.

What you need to do

If you use…	Migrate to…
`@ledgerhq/hw-app-eth`	`@ledgerhq/device-signer-kit-ethereum`
`@ledgerhq/hw-app-btc`	`@ledgerhq/device-signer-kit-bitcoin`
`@ledgerhq/hw-app-solana`	`@ledgerhq/device-signer-kit-solana`
`@ledgerhq/hw-transport-webhid`	`@ledgerhq/device-transport-kit-web-hid`
`@ledgerhq/hw-transport-web-ble`	`@ledgerhq/device-transport-kit-web-ble`
`@ledgerhq/hw-transport-node-hid`	`@ledgerhq/device-transport-kit-node-hid`

Where to meet us?

Our team will be attending the following events in the coming months. We’d love to connect with you to discuss your projects and provide in-person support.

ETH Global Lisbon

July 24-26th 2026 | Lisbon, Portugal