--- description: "Official firmware update guide, release notes, and latest firmware updater tools for IODD devices including ST400, ST300, LK100, MINI PRO, 2531, 2541, and 3544." --- # 🆙 IODD Firmware Updater Guide Keeping your IODD firmware up to date ensures the best compatibility with the latest hardware and fixes known bugs. Please read the version-specific warnings carefully before proceeding. > **Note**: Currently sold products use the latest firmware, so no additional update is required. ## 📌 Latest Firmware Versions | Model | Hardware Rev | Latest Version | | :--- | :--- | :--- | | **IODD-2531** | R1600 | 0.1.0.13 | | **IODD-2541** | R86 | 0.1.0.13 | | **IODD-3544** | R81 | 0.1.0.13 | | **IODD-MINI** | R68 | 0.1.0.13 | | **IODD-ST400** | 81-1 | 0.8.1.1 | | **IODD-ST300** | 81-1 | 0.8.1.1 | | **IODD-LK100** | 81-1 | 0.8.1.1 | | **IODD-MINI PRO** | 81-1 | 0.8.1.1 *(Factory Version)* | --- ## 📢 Release Notes & Changelog ### Version 0.8.1.1 (May 29, 2024) * **ST300, ST400**: Fixed an issue when using a 2nd partition that starts over the 2TB address limit. ### Version 0.8.1.0 (Dec 2, 2023) * **ST300**: Fixed slow reboot after mode change and resolved instant disabling Write-Protection not working. * **ST400, LK100**: Added a dedicated password reset function. ### Version 0.8.0.3 (Feb 26, 2023) * **ST300**: Fixed an issue where the device would not reboot after a mode change. ### Version 0.8.0.1 (Feb 26, 2023) * **General**: Fixed 4TB drive errors for NTFS and exFAT. * **NTFS**: Now supports up to 64KB (62KB) clusters. ### Version 0.8.0.0 (Feb 7, 2023) * **General**: Fixed an error where setup could proceed without a single LUN in the mode settings. * **General**: Improved read/write speed in encrypted mode. ### Version 0.7.x.x Series * **0.7.6.1 (Nov 2022)**: Fixed issues when removing the 2nd password. * **0.7.6.0 (Nov 2022)**: Fixed Linux booting error when the drive is encrypted over USB 2.0. * **0.7.4.x (2022)**: Fixed screen saver unlocking, long filename information display, and minor bugs. ### Version 0.1.0.x Series (For 2531/2541/3544/MINI) * **0.1.0.13 (Mar 2020)**: Added detection for empty or bad flash memory. *(Errata: Display may show 0.1.0.12 instead of 0.1.0.13)* * **0.1.0.12 (Mar 2020)**: Fixed Disk Lock message on IODD 2541. --- ## ⚠️ Critical Warning for Encryption Users (ST400 / LK100) Passwords created in **Version 0.7 or earlier** are NOT compatible with **Version 0.8 or later** due to an encryption logic upgrade (Secure 2.5). **You MUST back up all data and disable encryption before updating.** Failure to do so will result in total data loss. --- ## 🛠️ How to Update **Requirements:** Windows PC, USB Port, and a high-quality USB cable. 1. **Preparation**: Connect only **one** IODD device to your PC at a time. Ensure you run the exact firmware updater matching your model. 2. **Uncompress**: Extract the downloaded ZIP file to a local folder. **Do not run the updater directly inside the ZIP file.** 3. **Run**: Execute the extracted `.exe` file as Administrator. 4. **Update**: If `"Device is Detected"` appears on the screen, click the **Update** button. ### 🔄 What if the device is not detected? * Try a different USB port or cable. * **Manual Recovery Mode**: Disconnect the IODD. Press and hold **[9] + [Enter]**, then connect it to the PC. Release the buttons once connected and run the updater again. ### ⏳ Finalizing the Update Once the PC transfer is complete, click **Exit**. Reconnect the IODD and **wait for 2–3 minutes** for the internal processing to finish. **CRITICAL**: Do NOT disconnect the IODD while the LCD is blinking. Interrupting this flash memory writing process can leave the device unable to boot. ### 🆘 Troubleshooting: Version Not Changing *(For ST300 / LK100 / MINI PRO / MINI)* If your version number remains the same even after a successful PC transfer, follow this mandatory "Force Update" procedure: 1. Run the firmware update on your PC normally. 2. After the transmission is finished, the IODD will reconnect and show a **white screen**. 3. **Force Mode**: Disconnect the IODD. Press and hold **[9] + [Enter]** for at least **6 seconds** while reconnecting it to the PC. 4. The firmware update will continue internally. 5. Reconnect once more and verify the version in the Information menu.