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Wednesday, 03 February 2010 09:03

Apple's second fix for 27in iMac screen flicker

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Apple has released another update aimed at fixing screen flicker issues with the 27in iMac.

Late last year, Apple released the 27-inch iMac Graphics Firmware Update 1.0 in an attempt to cure the screen flickering problem plaguing some owners of the otherwise covetable big-screen desktop Mac.

Some users reported success, others said the problem persisted. Some owners claimed they were told a second fix would be available in February, and that turned out to be correct.

Apple has now released the 27-inch iMac Display Firmware Update 1.0 "to address issues that may cause intermittent display flickering."

It appears that the issue may have more than one underlying cause. Apple's notes on the latest update imply that it may fix some cases of flickering on its own, while in others the Graphics Firmware Update may also be needed.

"If you are still having display issues after successfully completing both firmware updates, contact AppleCare or an Apple Authorized Service Provider," advises Apple.

But can the problem really be fixed through software? Please read on.


The second update addressing screen flickering has arrived amid reports - apparently originating from MacBidouille [link to English translation] - that Apple has completely halted production of the 27in iMac until definitive fixes have been found for the flickering and yellow tint problems.

TWire twice asked Apple whether 27in iMac production had been halted, but a company spokesperson would only say "the new 27-inch iMac has been a big hit with customers" and "we are currently estimating units to ship within three weeks" rather than answering the question.

There has been speculation that not all of the screen issues reported on current iMacs can be fixed through software, and that a hardware change (repair/exchange) will be necessary.

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Stephen Withers

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Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.

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