Introduction

The imKey hardware wallet supports various cryptocurrencies and features through the installation and updating of specific Applets (Java Card Applets). Each Applet is designed to handle operations related to a particular blockchain, such as transaction signing, address generation, and other protocol-specific interactions.

Regularly updating your imKey Applets allows you to:

• Support newly added coins or tokens: Gain compatibility with new digital assets.
• Stay updated with the latest protocols: Keep up with blockchain network upgrades (e.g., new transaction types, address formats).
• Enhance functionality: Access new Applet features or improvements.
• Fix issues: Resolve known problems that may occur when interacting with certain blockchains.

Important: Updating an Applet is a secure process. It does not access, modify, or delete the private keys or recovery phrase stored on your device. Applet updates only affect the Applet’s own functional code. Your core asset information remains fully protected at all times.
We recommend updating Applets promptly through the imKey companion management tools (such as the mobile app) to ensure the best compatibility and user experience.

(PAID = Package Application ID, the unique technical identifier of each Applet.)

Applet Version History

Bitcoin (BTC) Applet

PAID: 696D6B65792E627463

Version 1.6.10

Release Date: 2025-01-17 (Note: This is a future date. Please verify.)

New Features:

• Added support for Dogecoin (DOGE) transaction signing and address parsing.

Version 1.6.00

Release Date: 2024-08-22

New Features & Enhancements:

• Added support for Native SegWit (Bech32) address format, enabling lower transaction fees.
• Added support for Taproot (P2TR) transactions, improving BTC privacy and efficiency.
• Added support for PSBT (Partially Signed Bitcoin Transaction) workflows, enhancing compatibility with multisig and advanced transaction scenarios.
• Implemented BIP-322 message signing, improving interoperability within the Bitcoin ecosystem.

Version 1.5.10

Release Date: 2021-03-24
Update: General maintenance and optimization.

Version 1.4.10

Release Date: 2020-11-05
Update: General maintenance and optimization.

Version 1.4.00

Release Date: 2019-11-25
Update: General maintenance and optimization.

Version 1.3.10

Release Date: 2019-09-05
Update: General maintenance and optimization.

Version 1.3.00

Release Date: 2019-06-27
Update: General maintenance and optimization.

Version 1.2.00

Release Date: 2019-01-19

New Features:

• Initial release with basic support for Bitcoin (BTC) transactions.

Ethereum (ETH) Applet

PAID: 696D6B65792E657468

Version 1.5.01

Release Date: 2023-03-17

Fixes:

• Fixed an issue that could cause the device to reboot unexpectedly when processing specific transaction types.

Version 1.5.00

Release Date: 2022-12-09

Fixes:

• Resolved a display overlap issue on the imKey screen when confirming NFT transactions.

Version 1.4.00

Release Date: 2022-03-16

Optimizations:

• Improved button confirmation flow when interacting with DApps via WebUSB.

Version 1.3.00

Release Date: 2021-11-25

New Features:

• Added support for new transaction types introduced by EIP-1559 (London Upgrade).

Version 1.2.00

Release Date: 2019-01-19

New Features:

• Initial release with basic support for Ethereum (ETH) and ERC-20 token transactions.

imKey Core (IMK) Applet

PAID: 696D6B65792E696D6B

This Applet manages secure communication and core management functions between the imKey device and external applications (mobile app, desktop tools).

Version 1.3.00

Release Date: 2021-04-20

New Features:

• Added multi-platform binding support, allowing a single imKey device to be securely paired with both the mobile app and desktop / web interfaces simultaneously.

Version 1.2.00

Release Date: 2019-01-19

New Features:

• Initial release with basic secure communication and device management capabilities.

Cosmos (ATOM) Applet

PAID: 696D6B65792E636F736D6F73

Version 1.0.10

Release Date: 2022-12-09

Optimizations:

• Improved the display of Cosmos registered token names.

Version 1.0.00

Release Date: 2019-01-19

New Features:

• Initial release with basic support for Cosmos (ATOM) transactions.

EOS Applet

PAID: 696D6B65792E656F73

Version 1.2.00

Release Date: 2019-01-19

New Features:

• Initial release with basic support for EOS transactions.

How to Update Your imKey Applets

Use the official imKey mobile app or other designated management tools. With the device connected, check for available updates and follow the on-screen instructions to complete the Applet upgrade.

If you encounter any issues during the update process, please feel free to contact our support team.

Important Notice:imKey sells physical security hardware products only and does not provide any virtual asset trading, custody, or funds-related services. References to third-party wallets, exchanges, or decentralized applications are for compatibility purposes only; related functions and services are provided independently by third parties.