New iMac 27inch screen flickering/tearing/shutoff

Well, I have not had any flickering/blackout or loud fan noises since the update, and of course I don't know for certain that I am "out of the woods" but I don't plan on following this forum any longer, as I am not experiencing any problems with my 27" imac. Hoo Ray! Best of luck to you all and I hope this is all over, and that all of our future experiences apple-wise are happy and satisfactory.

dxgriffiths wrote:
For any potential buyers reading, the quad is not worth it if you value silence. The quad-core iMac, for all the other problems, is not silent. And that's not even a glitch

My quad core i5 is perfectly silent, just to make people aware that DO want to purchase one.

May not be relevant seeing as I only bought my iMac 5 days ago (Apple Store Birmingham, UK), but my i5 is a week 51 build, haven't seen any flickering or yellowing in those 5 days, and I applied both recent patches - still have no problems.

I appreciate that people really want to hear about those that ARE faulty, but just wanted to throw my build date in the mix just in case it helps anyone at all.

So, I've had my new (replacement) 27" quad iMac since December with no flickering issues whatsoever (unlike the first one I bought). So the question is, DO I DARE download and install the two patches?

And if I don't, I'm getting tired of having to uncheck the firmware updates everytime I want to do another update. Is there any way to get rid of these updates once and for all, so I don't accidentally install them?

Had my week 46 since Black Friday.....seems ok. Installed both updates and nothing to note from the latest one - However, only time will tell. I think this thread needs to be kept open for a couple of weeks to measure feedback.
I have been monitoring this post from the start....and it has made some interesting reading.

I love my iMac...I don't what they done in the last update but it didn't appear a large file.

iPAD here I come 😉

How do you tell the build? I got mine when they first came out.

Yesterday after updating, the screen was mostly stable, but there were a few flickers. Today, only one episode of a popping gray stripe, so after 3-4 hours of work, looking pretty good.

I'll second that ..... my i7 is very quiet.

FIXED

Hey everyone, I had an idea. Since this thread is getting so long, and a bit tedious to read it all, I thought we could all start our posts from now on with a capital FIXED or NOT FIXED tag. That way, if we just want to skim the posts to see the ratio of people for whom it seems to have been fixed (so far) to those for whom it still flickers. I don't know... only an idea. I think it could make this thread even more useful. Tell me what you think!

FIXED after the patch!!! and SOOOOO quiet.

robgb wrote:

I'm getting tired of having to uncheck the firmware updates everytime I want to do another update. Is there any way to get rid of these updates once and for all, so I don't accidentally install them?

Just click on *Update/Ignore Update* in the menu bar

Got it. Didn't see that nice little feature. THANKS.

Simon (UK) wrote:

robgb wrote:

I'm getting tired of having to uncheck the firmware updates everytime I want to do another update. Is there any way to get rid of these updates once and for all, so I don't accidentally install them?

Just click on *Update/Ignore Update* in the menu bar

Before choosing to set your computer to ignore the aforementioned updates, I suggest that you download the various firmware updates in .dmg format and store them on your hard drive somewhere . . . just in case you need them at a later date.

Here are direct links to them. You may not need the second one, depending on whether or not you run Windows 7 on your machine:



01. 27-inch iMac Graphics Firmware Update 1.0

Released December 21, 2009:

Updates the graphics firmware on ATI Radeon HD 4670 and 4850 graphics cards.

http://support.apple.com/downloads/DL984/en_US/iMacDisplayUpdate.dmg


02. Graphics Firmware Update 1.0 (iMac and Mac Pro) compatibility with Windows 7

Released January 19, 2010

Use Graphics Firmware Update 1.0 if you run Windows 7 using Boot Camp on your iMac (with NVIDIA GeForce 7300 or 7600 GT) or Mac Pro (with NVIDIA GeForce 7300 GT or Quadro FX 4500) computer.

http://support.apple.com/downloads/DL978/en_US/GraphicsFirmwareUpdate.dmg


03. 27-inch iMac Display Firmware Update 1.0

Released February 1, 2010

Updates the display firmware on 27-inch iMac systems to address issues that may cause intermittent display flickering. The 27-inch iMac Display Update will update the display firmware on your iMac. Do not disturb or shut off the power on your iMac during this update.

http://support.apple.com/downloads/DL998/en_US/iMacDisplayUpdate.dmg

My Imac 27" had a MTBF (mean time between flicker) very long. So I can't tell.
But reading your posts it seems that Apple found a solution to this issue.
I never doubted they would.
See you on other threads.

I wish you all the best,
Jacques.

I second that.

week 48 and still perfect ever since it came out of it's box. I did install the two updates, just to see if it would make any difference.

It's prefectly quiet as well, I hardly even hear it when I'm gaming for several hours straight and it must have gotten hot.

Hi
I have been watching the news about troubled iMac 27 inch as I had one on order from Misco since 24/12/09 and it had been delayed etc seen the new fix, and all the other news but I just had a BIG shock when it arrived at work and now I scared I put all my money into something that might not work.

I have wanted to move to Mac for years but have not had the cash and now I have taken the jump I think its going to be a rough landing due to some bad hardware.

I will apply the patches etc and keep you all informed but if it all goes wrong can I still take it back to apple and get a refund and wait until they got the bugs fixed?
Wish us Luck