Previous 1 2 3 Next 278 Replies Latest reply: Dec 2, 2012 11:44 PM by 2yb Branched to a new discussion.
kevinrobers Level 1 Level 1

First of all, my apologies if i make alot of gramar/spell errors, english is not my native language.


Yesterday i've upgraded my Snow Leopard installation to Lion on my late 2008 macbook pro and from the beginning i am unable to start my Wifi/Airport card. The menu bar shows the wifi icon but with no signal bars. When i click the wifi icon and press 'Turn wifi on' nothing happens. System profiler shows the airport card and when i look in Console i can see that the system recognizes the wifi card and acknowledge it's mac address.


What i've tried so far:

- I've created another user account

- I performed a clean install on a second harddrive, same problem

- i rolled back to Snow Leopard and the airport card functions as it should be, this rules out a hardware failure

- I've deleted all files in /library/preferences/SystemConfiguration and rebooted

- I've created a new location with only the Airport card under System preferences - Network

- I've made the airport card inactive and active again


I did found some strange messages in Console but they are not very clear:

MacBook Pro, Mac OS X (10.7)
  • kevinrobers Level 1 Level 1

    Tried a few more things without any luck:


    - Reset SMC, PRAM and NVRAM

    - Deleted /Library/Preferences/ and rebooted

    - Changed my ipv6 settings to link local


    I've found out that Lion updates the firmware of the Airport card and the Airport utility so i think it has to do with that. I have a Broadcom BCM43 Airport Extreme (0x14E4, 0x88D) card. I don't have AVAST software or a firewall running but even if i did, that won't cause this kind of issues.

    Apple really needs to fix this, i can't work without wifi.

  • crye55 Level 1 Level 1

    Wifi on Lion is DEAD. Won't turn on.


    Had always had a weird issue with Airport/Wifi on this laptop, 2.93 duo. If I would turn off Airport, then turn it back on the machine would freeze. Often when starting up it would freeze (verbose logging startup seemed to point to an Airport issue). Then other times it would start up no problem and Airport would be on.


    Today installed Lion. Airport was working fine, was doing emails, browsing. Updated Little Snitch and did a re-start. Since then I cannot get Wifi to turn on. Have disabled LS, thinking that might be the prob. I choose "Turn on Wifi" and nothing happens. In system prefs it won't turn on there either. Click the button and nothing happens.


    Have deleted the Wifi out of the interface box and re-added it, thinking that might fix it. Nope.


    Under 10.6.8 that interface was called Airport, now under 10.7 it's called Wifi...weird. Is that something Apple changed?


    Someone please help. Airport/Wifi is dead on my MBP with Lion.

  • kevinrobers Level 1 Level 1

    Are you also able to see your Wifi card in System profiler? Click on the apple logo and go to 'about this mac'. Please also give us the name and type of your airport card so that we can find out if it's limited to a few airport cards or more.

  • kevinrobers Level 1 Level 1

    Just tried a few more things:


    - Deleted all airport related files in /Library/Preferences/

    - Deleted all airport related files in my user library

    - Did a permissions scan and fix with disk utility

    - Verified my disk with disk utility


    Nothing has worked for me yet. I really think Apple messed up with the firmware versions. I'm sure that if i'm able to flash the firmware back to the SL firmware it works fine.

  • Bert S. O. Level 1 Level 1

    I have the same problem with my 2008 unibody MacBook. Have now reverted to 10.6.8 again, can't work without wifi.


    Aiport card: AirPort Extreme  (0x14E4, 0x8D)

    Firmware: Broadcom BCM43xx 1.0 (


    Looks like the same type as yours Kevin.

  • kevinrobers Level 1 Level 1

    Yep. Can confirm that Bert. This is the firmware version on Snow Leopard, right? The firmware version on Lion should be It seems that more people are having difficulties with Airport under Lion. Connections that are dropping, slow speeds etc... I think that alot of these problems have to do with this firmware fail.

  • miliet Level 1 Level 1

    Hi, the same problem here. I upgraded yesterday to Lion an Wi-fi is death. Only during several minutes i could turn on "Wi-fi" and have signal. I've tried the following but nothing happens:


    - Restore permissions.

    - Reset SMC, PRAM and NVRAM.

    - I've created a new location with only the Airport card under System preferences - Network.

    - I've made the airport card inactive and active again.


    My card:


    AirPort Extreme  (0x14E4, 0x8D)

    firmware:          Broadcom BCM43xx 1.0 (


    Macbook Unibody bought in summer 2009, LION upgraded from SL 10.6.8


    I supose is a firmware problem... We'll have to wait!!

  • Bert S. O. Level 1 Level 1

    It's the firmware version under Snow Leopard indeed. For now I'm postponing the upgrade, I'm working on my thesis and this already cost me a valuable day of work...

  • miliet Level 1 Level 1

    I hope it would be solved soon!! For the moment, it's the only problem with Lion...

  • crye55 Level 1 Level 1

    Mine is still dead, have tried everything in this thread. Here's my report on Network, Wi-Fi:


    Software Versions:

           CoreWLAN:    2.0 (200.46)

           CoreWLANKit:    1.0 (100.43)

           Menu Extra:    7.0 (700.42)

           configd plug-in:    7.0 (700.57)

           System Profiler:    7.0 (700.3)

           IO80211 Family:    4.0 (400.40)

           WiFi Diagnostics:    1.0 (100.26)

           AirPort Utility:    5.5.3 (553.20)




           Card Type:    AirPort Extreme  (0x14E4, 0x8D)

           Firmware Version:    Broadcom BCM43xx 1.0 (

           MAC Address:    xx:xx:xx:xx:xx:xx

           Locale:    FCC

           Country Code:    X0

           Supported PHY Modes:    802.11 a/b/g/n

           Supported Channels:    1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165

           Wake On Wireless:    Supported

           AirDrop:    Supported

           Status:    Off

  • kevinrobers Level 1 Level 1

    I have exactly the same version numbers and airport card as you have crye55. I think there is no way to fix this on our own. This really is a firmware issue

  • galileo1 Level 1 Level 1

    I also have the same airport card in my late 2008 macbook and can confirm the WiFi won't turn on. Hopefully we can get a fix soon.

  • davidnowhere Level 1 Level 1

    Guy's my knowledge about these things are very limited. I think i have exactly the same problems with you guys.

    Can't turn on my wifi at all. What can i do? I only have a wifi connection at i have no access to the internet at all...

  • davidnowhere Level 1 Level 1

    by the way my Card type is AirPort Extreme  (0x14E4, 0x8D)

Previous 1 2 3 Next