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Helpful answers
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Jan 11, 2015 9:20 AM in response to terrie_808by sterling r,Hello there terrie_808,
If the update still seems to not be taking for your Thunderbolt Display, I would like to recommend the troubleshooting in the following article to help you get that resolved, named:
After installing Thunderbolt Firmware Update 1.2:
- Thunderbolt ports may not work.
- Target Display Mode may no longer work.
- The update may keep reappearing as available for download.
This occurs when a self-powered Thunderbolt device (other than a directly-connected Thunderbolt display) is connected to a Thunderbolt port while installing the update.
To resolve this issue:
- Shutdown your computer.
- Disconnect all Thunderbolt devices.
- Wait 10 seconds.
- If you are using a Mac mini with a Thunderbolt display, reconnect the Thunderbolt display directly to your computer via the Thunderbolt port. Do not connect other Thunderbolt devices at this time.
- Restart your computer.
- If the Thunderbolt Firmware Update 1.2 is offered, download and install it and restart your computer when asked. If the Thunderbolt Update is not offered, the update has installed correctly.
- Reconnect all Thunderbolt devices.
Thank you for using Apple Support Communities.
Take care,
Sterling
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Jan 12, 2015 9:42 PM in response to sterling rby terrie_808,I have no usb or Thunderbolt display or peripherals attached.
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Jan 14, 2015 2:15 PM in response to terrie_808by sterling r,Thank you for using the Apple Support Community. Due to the nature of your issue you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action.
