Lion Internet Recovery Comes to Current-Generation iMacs

Apple today released a series of firmware updates for its 2011 Mac lineup, addressing several issues to increase the stability of the systems. But the iMac EFI Update 1.7 goes a bit further, bringing the Lion Internet Recovery feature to the current generation of iMac models. The iMac update also specifically addresses several Thunderbolt performance issues.

About iMac EFI Update 1.7

This update enables Lion Recovery from an Internet connection and includes fixes that resolve issues with Apple Thunderbolt Display compatibility and Thunderbolt Target Disk Mode performance on iMac (early 2011) models.

Internet Recovery launched as part of OS X Lion in July, allowing users to easily install the operating system on a blank hard drive, a feature that is handy for users who are replacing their hard drives or for whom the recovery partition included on their Lion system becomes inaccessible. Internet Recovery functions by adding a minimal bootable install onto a machine's firmware to allow it to connect the Internet and download the full Lion operating system for installation.

lion internet recovery
Internet Recovery initially debuted on the MacBook Air and Mac mini models that were released alongside OS X Lion, but was extended to the Early 2011 MacBook Pro line last month. With the addition of the iMac, all of Apple's current Mac models with the exception of the Mac Pro are now capable of accessing Lion Internet Recovery. The Mac Pro has not been updated since mid-2010, and delays in Intel's chip production appear to have pushed any refresh into next year.

In addition to the iMac EFI firmware update released today, Apple also pushed out MacBook Pro EFI Firmware Update 2.3 for Early 2011 models, MacBook Air EFI Firmware Update 2.2 for Mid 2011 models, and Mac mini EFI Firmware Update 1.4 for Mid 2011 models.

Related Roundup: iMac
Buyer's Guide: iMac (Neutral)
Related Forum: iMac

Popular Stories

iOS 18 Siri Integrated Feature

Report: These 10 New AI Features Are Coming in iOS 18

Sunday May 26, 2024 12:57 pm PDT by
iOS 18 and macOS 15 will offer an array of new AI features such as auto-generated emojis, suggested replies to emails and messages, and more, Bloomberg's Mark Gurman reports. A significant portion of Apple's Worldwide Developers Conference (WWDC) is expected to focus on AI features. Writing his latest "Power On" newsletter, Gurman explained that Apple's AI strategy emphasizes providing...
new best buy blue

Best Buy's Memorial Day Sale Has Record Low Prices on iPads, MacBooks, and Much More

Friday May 24, 2024 7:12 am PDT by
Best Buy today kicked off its Memorial Day weekend sale, and it has some of the best prices we've tracked in weeks on iPads and MacBooks. Specifically, you'll find record low prices on the 5th generation iPad Air, iPad mini 6, M2 MacBook Air, and M3 MacBook Pro. Note: MacRumors is an affiliate partner with Best Buy. When you click a link and make a purchase, we may receive a small payment,...
iOS 18 WWDC 24 Feature 2

Gurman: iOS 18 Will Allow Users to Recolor App Icons and Place Them Anywhere

Sunday May 26, 2024 12:22 pm PDT by
Apple's iOS 18 update will introduce new features for further customizing the iPhone's home screen, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman claimed that Apple will allow users to change the color of app icons in iOS 18. For example, "you can make all your social icons blue or finance-related ones green." This kind of home screen...
Apple iPhone 14 color lineup feature

Apple Now Selling Refurbished iPhone 14 Models

Friday May 24, 2024 11:15 am PDT by
Apple today added refurbished iPhone 14, iPhone 14 Plus, iPhone 14 Pro, and iPhone 14 Pro Max devices to its online store for refurbished products, offering the prior-generation iPhones at a discount for the first time since their 2022 launch. The iPhone 14 is available starting at $619, the iPhone 14 Pro is available starting at $759, and the iPhone 14 Pro Max is available starting at $849. ...
top stories 25may2024

Top Stories: iOS 17.5.1 Fixes Concerning Photos Bug, All-New iPhone 17 Model Rumored, and More

Saturday May 25, 2024 6:00 am PDT by
It's been quite a week of Apple news and rumors, ranging from a concerning bug with deleted photos reappearing on users' devices to hot rumors about a new high-end iPhone model for 2025 and a MacBook with a foldable screen coming as soon as 2026. Other news and rumors this week included fresh expectations for iOS 18 features and new headphones from Sonos to compete head-to-head with AirPods...

Top Rated Comments

SmileyDude Avatar
164 months ago
What's up with the picture of the bondi blue iMac on that support page for the EFI update?
Score: 9 Votes (Like | Disagree)
Jerome Morrow Avatar
164 months ago
What's up with the picture of the bondi blue iMac on that support page for the EFI update?

Made me smile. :)
Score: 8 Votes (Like | Disagree)
AidenShaw Avatar
164 months ago
Have you tried clean-installing Lion? When I had my MBP, I had a clean install, and never experienced any of the internet connectivity issues. :apple:

I thought that reformatting the drive to fix software problems was only a Windows 95 issue.... ;)
Score: 2 Votes (Like | Disagree)
vitzr Avatar
164 months ago
I thought that reformatting the drive to fix software problems was only a Windows 95 issue.... ;)

Ten Points... that was so funny it was the best laugh I've had all day, and I've had some good ones. :D
Score: 1 Votes (Like | Disagree)
daxomni Avatar
164 months ago
I would like to see this on MBP's from 2009 and 2010 as well.

I'll bet you forgot to run Utility Disk Permissions before you ran the update. It's a good idea to do that before every update.
What? You mean "it just works" isn't always true? Heresy I say!
Score: 1 Votes (Like | Disagree)
LimeiBook86 Avatar
164 months ago
I'm happy to get the Internet Recovery option on my 2011 iMac. I was starting to feel left out. ;)

Made me smile. :)
Me too (attached below in case Apple fixes it) :p


Awesome! This introduced a display backlight flicker to my 27" iMac though :/

It seems to disappear after a few minutes of uptime though so its not very huge. Even though i think it is really weird and i hope it won't harm the display.

Anyone else with this problem? PRAM and SMC reset don't change anything.
When I perform the update with my iMac I'll let you know if it does the same. Although I'm a bit hesitant now...
Score: 1 Votes (Like | Disagree)