MBP 2011 - No sound after firmware update

Discussion in 'MacBook Pro' started by Hecro, Sep 15, 2011.

  1. Hecro, Sep 15, 2011
    Last edited: Sep 15, 2011

    Hecro macrumors member

    Mar 8, 2011
    Hi all,

    I updated my MBP 2011 today - there were no issues with the actual update.
    But when it turned back on again there was no sound. The F10, 11 & 12 keys work, but it's just at the mute setting and I can't turn it up.

    Any ideas?

    Reset of PRAM didn't fix the problem.
    The weird thing is actually that the sound does work - I just can't control it. Or at least it works on Skype.

    Here is a picture what happens when I try to turn up the sound:
  2. Hecro thread starter macrumors member

    Mar 8, 2011
    No one else experiencing the above problem?
    Any ideas?
  3. jnicolau macrumors newbie

    Nov 4, 2011
    I'm having the same problem too.
    It happens every single firmware update.
    After that the sound and one of the usbs are lost.
    I took my mac to the store for repair and they just format everything.
    I'm tired of formatting my mac every firmware update.

    Anybody help!!
  4. ljonesj macrumors 6502a


    Oct 20, 2009
    Kingsport TN
    try the smc reset that might help my mini lost its bong until i did the smc and pram both
  5. deathless macrumors newbie

    Dec 12, 2011

    I had this problem due to performing a firmware update with earphones plugged in. I was on the phone with technical support then realized it could be related I just plugged the earphones back in and then removed them and now its working! Quite funny :D

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