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The Symphony I/O firmware update fails or gets stuck
This article is regarding an issue that may occur while following the instructions in this link: Updating Symphony I/O Firmware and Software
If the firmware update fails or stalls and never completes:
- Quit the firmware updater app
- Power-cycle the Symphony I/O
- Try the update again, with these tricks:
-Connecting the Symphony I/O to a different USB port on your Mac
-Connecting the Symphony I/O to a USB 2.0 Powered Hub
-Connecting the Symphony I/O to an Apple keyboard
-Try the firmware update on a different Mac if you have access to one
Be patient it can take up to 5-10 minutes to complete. You may have to try the firmware update several times before it gets through.
It is not recommended to try downgrading back to the older firmware versions, as the issue with the update is not with the firmware, but with the updater app itself.
On some USB 3.0 equipped Macs, the Firmware Updater will freeze at 4% and never complete the update. To work around this, you need to use a USB 2.0 or USB 1 port. This can be a USB 2.0 or USB 1 port on a peripheral hub, Apple keyboard, or monitor display.