Krux is open-source firmware that enables anyone to build their own Bitcoin signing device via off-the-shelf parts. It runs on Kendryte K210 devices such as the M5StickV and Maix Amigo, converting them into airgapped devices that can sign transactions for multisignature and single-sig wallets.

This release focuses on internal optimizations to enhance the firmware's performance, making it lighter, faster, and more reliable. These improvements not only result in a better user experience but also lay the groundwork for seamlessly integrating future features.