careful!!!
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,
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.
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.
Pete.
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
Shop for your Apple, Mac, iPhone and other computer products on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.