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http://www.macupdate.com/download/5656/imac_fwupdate_4.1.9.smi.bin
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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 from a local drive. If you are using Mac OS X you must boot from a local Mac OS 9.1 writeable partition (not a CD, or network disk) prior to following the update instructions.

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.

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Requirements

iMac (slot-loading CD/DVD model only).

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Apple iMac Firmware User Discussion

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robcarlo Member IconComment+0
robcarlo
+0

okay i have an imac 333 tray loading running 9.2.2 and macos 10.1.5. i wish to install 10.3 but it won't upgrade. i've checked the firmware upgrade which is 3.0 and all seems to be okay. when i put the 10.3 cd in the drive it goes straight to a grey screen saying apple firmware ok. i then type boot-cd and nothing happens. can someone help please. as i only want to set up this machine purely for email and web.

Reply0 replies
Version 4.1.9
Anonymous Member IconReview
Anonymous
+0

I dont know what all these people below are talking about,I had no problems with this update....I think you should learn more about computers and read the instructions before you criticize apple.

Reply0 replies
Version 4.1.9
Anonymous Member IconReview
Anonymous
+0

I don't have os9. I have os 10.2 run perfectly but i want to install panther. how??

Reply0 replies
Version 4.1.9
Anonymous Member IconReview
Anonymous
+0

BE CAREFUL! Applied this update and ran into the same problem as Steve - third party RAM is 'gone'. Used to have 320 MB of RAM, but after this update a 256 MB chip can't be seen. Thanks Apple.

Reply1 reply
Version 4.1.9
Anonymous Member Icon
Anonymous
+0

If you had fully read about the update you would have noticed that Apple added a couple things in that update about unsupported RAM and perifs. You can use hacks and patches if ya want but sooner or later all those who tried to be cheap instead of proper will have to replace that usupported RAM. I got 2 Edge 256 sticks at 4allmemory.com for 109.00. And my Rev. D reads 512 MB RAM. and these tray loaders aren't suppose according to what I have found all over the web. But again, I think it's a support issue.
Thanks to you all!

Anonymous Member IconReview
Anonymous
+0

I installed the imac 4.1.9 firmware and now my hp printer can not be seen by my computer. Can't find any help on this, can you help?

Reply0 replies
Version 4.1.9
Anonymous Member IconReview
Anonymous
+0

CAUTION! After loading this firmware
update on my iMac DV SE (400Mhz), I was
no longer able to boot from my VST
FireWire HD. Upgrading to 9.2.1, then to
9.2.2 made no difference. I can still
mount the FW HD however.

Reply0 replies
Version 4.1.9
Anonymous Member IconReview
Anonymous
+0

MacOS 9.2.1 definite improvement of speed and stability thus far-great download.

Reply0 replies
Version 4.1.9
Steve Member Icon+0
Steve
+0

VERY DANGEROUS. This is an update that for many machines makes 3rd party added RAM disapear. Additionally, Apple has told me that it is "our " problem. Very disappointing. Clearly we put faith into things that are recommended by them at Software Control panel and their update pages. Many of us had perfectly smooth running machines. and this has created a myrid of problems, such as non function of Virtual Memory in addition to not recognizing added memory. Apple's suggestion : "buy different memory". Very sad. DO NOT DOWNLOAD THIS

Reply0 replies
Version 4.1.7
Des Member Icon+0
Des
+0

A huge impovment!! I have found Mac OS 9.1 to have inproved in stability. Also memory performance has increased.

A must have update!

Reply0 replies
Version 4.1.7
Des Member Icon+0
Des
+0

A huge impovment!! I have found Mac OS 9.1 to have inproved in stability. Also memory performance has increased.

A must have update!

Reply0 replies
Version 4.1.7
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Ratings

Overall
(5)
Current Version (4.x)
(5)

Details

Downloads 15,817
Version Downloads 4,102
Type Utilities / System
License Updater
Date 25 Sep 2001
Platform OS Classic / PPC 32
Price Free
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