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iMac Firmware Update 4.1.9: Information and Download

Date: [21st Jun 2024]
Categories: [imac]

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About iMac Firmware Update 4.1.9: Information and Download

This article contains the About the iMac Firmware Update 4.1.9 document and a link to the iMac Firmware Update 4.1.9.

The iMac Firmware Update 4.1.9 will only run on iMac computers with slot-loading CD or DVD drives running Mac OS 9.1 or later from a local drive. If you are using Mac OS X you must boot from a local Mac OS 9.1 or later writeable partition (not a CD, or network disk) prior to following the update instructions.

Firmware updates are also available for Power Mac G4 and Power Mac G4 Cube models.

Firmware Update 4.1.9 includes improvements to starting up Mac OS X from the local hard disk, Firewire target disk mode, starting up from the local hard disk, network startup, and system stability. This update also adds support for additional security options which allow the Open Firmware to be password protected.

Before you install the iMac Firmware Update 4.1.9, read the instructions below. You may want to print them for reference.

Note: After you install this update, the parameter RAM (PRAM) is reset. This may reset some of your control panels to default settings. See Mac Help, available in the Help menu, for more information on changing your control panel settings.

  1. Double-click the iMac Firmware Updater icon.
  2. Note: If a message says your firmware is up-to-date with version 4.1.9 of the iMac Firmware Updater, or that this version of the iMac Firmware Updater will not run on this computer, then you do not need this update. If a message says you need to install Mac OS 9.1, the firmware updater will not run until you install Mac OS 9.1 or later.

  3. Follow the onscreen instructions. When prompted, click Shut Down in the dialog box to shut down your iMac.
  4. Locate the programmer's button on the side of the iMac, to the right of the reset button. Press and
    hold in the programmer's button. You may need to use a pen or a straightened paper clip.
iMac Rest Howto

 

  1. While you hold in the programmer's button, press the Power button to start up your iMac.
  2. Continue to hold in the programmer's button until you hear a long tone.
    Release the programmer's button when you hear the tone. The update starts automatically.

A status bar shows the progress of the update. When a message says your computer's firmware has been successfully updated to version 4.1.9, you are finished.

Note: If a message says the update was not completed successfully, review the instructions and begin the update process again.

For more information, see http://www.apple.com/support.

Earlier versions of this software may be available at http://support.apple.com/downloads/.

For help with downloading, see Software downloads: Formats and common error messages.

All software available from this site is covered by a software license agreement included with this software.

Language/OS Required Release Date Version Software
North American English
North American English Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
International English
International English Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
Français
French Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
Deutsch
German Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
Español
Spanish Mac OS 9.1 or later (Not Mac OS X)
2001-10-01 4.1.9 Download
1.2 MB
Italiano
Italian Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
Nederlands
Dutch Mac OS 9.1 or later (Not Mac OS X)
2001-09-25 4.1.9 Download
1.2 MB
Japanese
Japanese Mac OS 9.1 or later (Not Mac OS X)
2001-10-01 4.1.9 Download
1.2 MB
Norsk
Norwegian Mac OS 9.1 or later (Not Mac OS X)
2001-10-11 4.1.9 Download
1.2 MB
Svensk
Swedish Mac OS 9.1 or later (Not Mac OS X)
2001-10-11 4.1.9 Download
1.2 MB
Suomi
Finnish Mac OS 9.1 or later (Not Mac OS X)
2001-10-09 4.1.9 Download
1.2 MB
Dansk
Danish Mac OS 9.1 or later (Not Mac OS X)
2001-10-10 4.1.9 Download
1.2 MB
Brasilero
Brazilian/Portuguese Mac OS 9.1 or later (Not Mac OS X)
2001-10-09 4.1.9 Download
1.2 MB
Simplified Chinese
Simplified Chinese Mac OS 9.1 or later (Not Mac OS X)
2001-10-24 4.1.9 Download
1.2 MB
Traditional Chinese
Traditional Chinese Mac OS 9.1 or later (Not Mac OS X)
2001-10-24 4.1.9 Download
1.2 MB
Korean
Korean Mac OS 9.1 or later (Not Mac OS X)
2001-10-24 4.1.9 Download
1.2 MB

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