iMac Firmware Update 1.4 Addresses ATI 4850 Freezing Issues
Over the weekend, Apple issued an iMac EFI Firmware Update 1.4 which specifically addresses an intermittent system freeze that was occuring in iMacs with the ATI Radeon HD 4850 graphics card.
Once you download the software update, you must launch it manually as it will not be installed automatically.
The update also fixes wake-from-sleep issues in Boot Camp.
Once you download the software update, you must launch it manually as it will not be installed automatically.
To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/iMac EFI Firmware Update.app). The updater will launch automatically when the Installer closes.
An informal survey in our forums found that the majority of those who had problems found relief with the firmware update. The issue had generated a lengthy discussion on our forums as well as Apple's support forums.The update also fixes wake-from-sleep issues in Boot Camp.
Top Rated Comments
(View all)36 months ago
Anybody have first hand knowledge of this? I ordered an iMac over the weekend and it *should* be here tomorrow afternoon. I went with the ATI despite the freezing and I'm curious to see if it is truly fixed!
36 months ago
Anybody have first hand knowledge of this? I ordered an iMac over the weekend and it *should* be here tomorrow afternoon. I went with the ATI despite the freezing and I'm curious to see if it is truly fixed!
Did you see the poll results?
http://forums.macrumors.com/poll.php?do=showresults&pollid=4257
arn
36 months ago
Its nice to see that Apple took fairly quick action against this problem! Any one with first hand knowledge notice a before and after difference when installing the update?
36 months ago
Speaking as one affected by the dreaded freezing I can say that thus far I've had not a single freeze since installing the upgrade, despite re-enabling airport. OK, it hasn't been long but I've thrashed my iMac within an inch of its life.
I haven't noticed any degradation in performance as a result of the upgrade and the fans appear to be functioning identically so things look good...so far :)
BB
I haven't noticed any degradation in performance as a result of the upgrade and the fans appear to be functioning identically so things look good...so far :)
BB
36 months ago
There was nothing intermittent about my freezes with my 4850 iMac. I could reproduce it with a simple test of streaming internet radio over Airport in iTunes and running a full-screen visualizer. After the patch, no freezes! Yippee!
36 months ago
nothing is showing up for software updates on my iMac 8,1
[EDIT] oh, nevermind. this 2008 iMac uses ATI Radeon HD 2600 Pro
[EDIT] oh, nevermind. this 2008 iMac uses ATI Radeon HD 2600 Pro
36 months ago
glad to hear that they are addressing the issues, and that it's actually working for people
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