--- description: "Detailed release notes and version history for the IODD 2541 firmware." --- # 📜 IODD 2541 Version History Below is the legacy version history and modification log for the **IODD 2541** firmware. --- ### Version R81_B00 (Release) **Date:** September 14, 2018 * **Enhancement**: The device unlock state is now securely retained until a USB reset is explicitly triggered or the device is fully disconnected.