Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.



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Wake On Demand in Snow Leopard

Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.

While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.

Submitted by
Doug McLean


Firmware Updates for iMac, Mac mini, MacBook Air, and MacBook Pro

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Apple has released a quartet of firmware updates for models released in 2011: iMac EFI Firmware Update 1.9, Mac mini EFI Firmware Update 1.6, MacBook Air EFI Firmware Update 2.4, and MacBook Pro EFI Firmware Update 2.7. Each update improves reliability when booting from the network, addresses issues with HDCP authentication after rebooting, and fixes a problem with boot device selection when a USB storage device is hot-plugged. As with any firmware update, you should read the installation instructions carefully before installing and avoid interrupting the update process. To ensure you get an update only if it’s necessary, we recommend relying on Software Update; if an update doesn’t appear for you, it’s not appropriate for your Mac. (Free, each approximately 4 MB)


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Comments about Firmware Updates for iMac, Mac mini, MacBook Air, and MacBook Pro
(Comments are closed.)

Tony Hernandez  2012-03-11 08:56
EFI firmware update 2.7 was installed but every time I run system update it tries to install the update again. Any help would be appreciated. Thanks.
Adam Engst  An apple icon for a TidBITS Staffer 2012-03-11 10:58
What happens if you let it install again? Perhaps it didn't finish successfully the first time?