Apple has released a firmware update for their Thunderbolt display. The update fixes a fan noise issue affecting a few of the displays. If you own one, then it’s recommended that you update as soon as possible.
This update addresses a fan noise issue affecting a small number of Apple Thunderbolt Displays and improves stability.
The updater application will be installed in the Utilities folder inside the Application folder and will be launched automatically when you close this installer.
Please follow the instructions in the updater application to complete the update process.
Thunderbolt display firmware version 1.1 is available in Software Update.