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  1. #1
    CalSD is offline Registered User
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    Firmware update...

    Is it possible to "downgrade" a firmware update?

  2. #2
    Browni's Avatar
    Browni is offline Registered User
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    where do you find updated firmware?
    Current Setup: G4 450 Mhz Mac OS 10.3.8 |
    Adam Brown Designs

  3. #3
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    bobw is offline The Late: SuperMacMod
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  4. #4
    Browni's Avatar
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    How do you install firmware updates if you dont have a OS9 installed?
    Current Setup: G4 450 Mhz Mac OS 10.3.8 |
    Adam Brown Designs

  5. #5
    bobw's Avatar
    bobw is offline The Late: SuperMacMod
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    I haven't seen anything or reversing a firmware upgrade, but you could try, at your own risk, using the older version and try doing an update with it.

    What Firmware do you want to reverse?

    Browni
    What firmware do you want to install?


  6. #6
    CalSD is offline Registered User
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    I only ask because version 4. 1. 8f5 is causing so many problems!

  7. #7
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    fryke is offline Super Moderator
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    I'd search Apple's Knowledge Database... Also: What Mac do you have specifically? Was the firmware update intended for your machine? Has Apple already released a newer version for your specific machine? My guess is you have an 1.6 GHz PowerMac G5 and installed the update for 'single-processor' PowerMacs that was only intended for 1.8 GHz machines (but badly labelled...). If so, I thought Apple had already released an updated firmware for your machine.
    Mac user since 1987. Running Mac OS X 10.8 Mountain Lion on a MacBook Air 11" & an iMac 27" and whatever's newest for my iPhone 4s, iPad 3 and AppleTV 2.
    Apple Certified System Administrator 10.6, Apple Sales Professional 2008-2011, Apple Certified Mac Technician.

  8. #8
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    perfessor101 is offline Registered User
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    I wouldn't try to reverse a firmware upgrade unless it was on a machine I was willing to junk if it did not work.
    iMac 3.06 GHz core 2 Duo OS X 10.5.8
    MacBook Air OS X 10.5.8
    MacMini core 2 duo OS X 10.5.8

 

 

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