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System Software Update Will Not Install

Discussion in 'OS X Mountain Lion (10.8)' started by Howard54, Jun 2, 2013.

  1. macrumors member

    I am running a Macbook Air with Mountain Lion. The App Center shows a Thunderbolt 1.2 software update for RAW 4.06 compatibility is available. The laptop downloads the update and then tries to restart, but instead of restarting it just shuts down and I have to restart it manually. When I do, the update is not installed and it still shows as available.

    I have repeated the process several times with the same result. Is this a common issue with this update? Is it my Macbook? Any ideas how to resolve? Other software downloads seem to work fine.
  2. macrumors demi-god


    You have to be on AC power for this update to work.
  3. macrumors member

    Thanks, that did the trick!

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