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  1. #1
    27" Flickering Screen firmware update ...
    TattooedMac's Avatar
    Member Since
    May 19, 2009
    Waiting for a mate . . .
    21" iMac 2.9Ghz 16GB RAM & 13"MBP 2.9Ghz i7 8GB RAM 10.10.3, iPhone5 & iPad Air 2 iOS 8.3, ATV3
    27" Flickering Screen firmware update ...
    Dont forget to use the Reputation System if someone has helped you out !!!
    Arguing with a zealot is only slightly easier than tunneling through a mountain with your forehead!!!!!
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  2. #2
    27" Flickering Screen firmware update ...

    Member Since
    Feb 05, 2010
    My iMac was flickering out of the box. the first "graphics firmware update 1.0" that came out Dec 21 cured it. I installed this latest firmware update today (Display Firmware Update 1.0) and now my screen is flickering every few seconds!! And the worst part is, I forgot to time capsule before the update. I recommend everyone avoid this update if your screen isn't already flickering.
    good luck,

  3. #3
    27" Flickering Screen firmware update ...
    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Texas, where else?
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '11 1.8 i7 4GB 10.10; 21" iMac '13 2.9 i5 8GB 10.10; 5s & 5c
    And just an FYI: A backup will not take you back to before a firmware update. A firmware update updates your hardware. It is not an update that is applied into your OS that can simply be undone by a restore. To undo a firmware update you would need to re-install an earlier firmware.

    Unless a particular firmware is advised for all users of a device, it is typically not advised unless you are experiencing the issues which that particular firmware addresses.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  4. #4
    27" Flickering Screen firmware update ...
    Raz0rEdge's Avatar
    Member Since
    Jul 17, 2009
    27" i7 iMac, 24" iMac, 13" Macbook Air, iPhone 5 & 5S, iPod Nano 7th Gen, iPad 2 16GB WiFi, iPad 3
    I suppose the adage "if it ain't broke, don't fix it" is appropriate here..


  5. #5
    27" Flickering Screen firmware update ...

    Member Since
    Feb 07, 2010
    iMac 27: i7,1TB HDD,8 gig Ram
    Exactly what does this so called flickering look like?
    I am only asking because of late when my iMac 27" comes out of sleep mode the odd time it goes right back into sleep mode but does come out once I activate via keyboard,mouse etc..Once I begin working on the computer there is no issue.
    Thanks in advance.

  6. #6
    27" Flickering Screen firmware update ...
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    What you described is not "flickering". The flicker problem is similar to a fast blinking light - on - off very quickly. The Apple discussion forums have dozens of different descriptions you can look over if you like. LINK


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