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(Mid 2011) MacBook Air EFI Firmware Update 2.9.1 Info/Download (from Wed.)
(download page linked, but users may want to wait for feedback first)
"MacBook Air EFI Firmware Update 2.9.1 (4.3MB)
This update replaces EFI Firmware Update 2.9 and is recommended for MacBook Air (Mid 2011) models. This update addresses an issue where systems may take longer to wake from sleep than expected and fixes a rare issue that may cause fans to run at full speed after waking from sleep.

System Requirements:
OS X 10.9.2 and later
MBA41.0077.B11" (typo, is version after update)

Per an apple doc (later retracted), MBA41.0077.B11 was the EFI version after installing the (pulled) v2.9 update. (The EFI 2.9 update requirements noted having EFI 0077.B00, .B08, .B0E or .B0F.)
Check the MacBook Air forum for feedback. (An early report from a 13" 2011 MacBook Air owner said he updated OK. Boot rom MBA41.0077.B11 after EFI 2.9.1 update.)
  

Apple/Mac/iOS related News/Updates/Tips/PR: (later added first)

  
Updated Apple Support/How-To/Troubleshooting Articles:

Many more here on Tips, Troubleshooting & How-To Guides for Mac/OS X/iOS page.
  

Other News/Reviews/Tech/Tips/OT: (later added first)


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    Previous News Archive Summary:
      Tuesday July 29th, 2014 News
    • Tips for 2011 MacBook Air black screen after trying to install EFI Update 2.9
    • Mid-2014 Retina MacBook Pros, Price Cut on non-Retina 13in MacBook Pro
    • New 13"/15" Retina MacBook Pros SSD Benchmarks, Internal Photos
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    • Apple iPad Basic troubleshooting doc updated

    For links to older news pages, see the Archives.
      

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