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description: "Detailed release notes and version history for the IODD 2531 firmware."
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# 📜 IODD 2531 Version History

Below is the legacy version history and modification log for the **IODD 2531** firmware.

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### Version 1600N/F (Release)
**Date:** July 14, 2016
*   **Enhancement**: Significant improvements to LCD visibility and rendering.

### Version 1558N/F (Beta)
**Date:** April 23, 2016
*   **New Feature**: Added the `Menu -> Advanced -> Instant Save` option.
    *   *Note*: When checked, loading information will be saved instantly upon selecting an ISO file.

### Version 1555N/F (Release)
**Date:** March 28, 2016
*   **Enhancement**: VHD and RMD files are now fully compatible with **Rufus**, allowing for easier creation of bootable virtual drives.

### Version 1288F (Release)
**Date:** June 17, 2014
*   **Optimization**: General improvements and bug fixes over the baseline version 1284.

### Version 1288N (Release)
**Date:** June 2, 2014
*   **Optimization**: General improvements and bug fixes over the baseline version 1284.