OWC Mercury Elite Pro Dual 3-Port Hub: Sleep Firmware Update

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Users may experience the OWC Mercury Elite Pro Dual 3-Port Hub not being recognized by the host system when waking from sleep. Users who have this experience can download and apply a firmware update that will properly mount the OWC Mercury Elite Pro Dual 3-Port Hub when waking from sleep. Users who are not comfortable completing this process should have contact OWC support and a return will be authorized to update the device's firmware.

Relevant Part Numbers

  • OWC Mercury Elite Pro Dual 3-Port Hub: OWCMEDCH7---

Mac Firmware Update Instructions

1. Ensure the OWC Mercury Elite Pro Dual 3-Port Hub is disconnected from the Mac system.

2. Mac systems with a T2 security chip or Apple silicon processor will need to enable third party developers before proceeding with the firmware update. Complete Apple's instructions for enabling third party developers:

3. Download the firmware update ZIP file “Mac Sleep Firmware Update for OWC Mercury Elite Pro Dual 3-Port Hub” by visiting the Downloads section of the OWC Mercury Elite Pro Dual 3-Port Hub Product Support page.

4. Access the Downloads folder and open the downloaded DMG file titled "OWC Mercury Elite Pro Dual 3-port Hub – Asm105-220908".

  • The DMG file will open showing a folder titled "OWC Mercury Elite Pro Dual 3-port Hub – Asm105-220908.
  • Move the folder to the Desktop

5. Open the folder "OWC Mercury Elite Pro Dual 3-port Hub – Asm105-220908" from the Desktop which will contain a:

  • Firmware kernel extension .bin file "220908_B5_4F_83.bin"
  • Firmware updater application titled "Asm105FwUpdate_Sample"
  • PDF/Word instructions for completing the firmware update process.

6. Open the PDF/Word instructions and proceed through the provided steps to continue with the firmware update.

    PC Firmware Update Instructions

    1. Ensure the OWC Mercury Elite Pro Dual 3-Port Hub is powered and connected to a compatible host system with the included data and power cable.

    2. In the Windows environment, download the firmware update ZIP file “Sleep firmware Update (Windows/Mac via Parallels) for OWC Mercury Elite Pro Dual 3-Port Hub” by visiting the Downloads section of the OWC Mercury Elite Pro Dual 3-Port Hub Product Support page.

    3. In the Windows environment, access the system Downloads folder and open the downloaded Compressed Folder. The compressed folder will open showing a compressed firmware update file, and PDF/Word instructions for completing the firmware update process. Before accessing the firmware update folder, open the instructions and proceed through the provided steps.

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