There is a firmware update for the Time Machine. Open up Airport Utility and you should see your Time Capsule listed there, select it and you should have the option to update the firmware..
The only way I can get the time machine to go to solid green is by unplugging it and then replugging it back. What does the flashing yellow indicate and how do I get back to solid green? It appears to have all of the latest updates. When I go to updates on the APP site it does not show any updates for the time machine.
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