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Author Topic: iMac4,1 and iMac5,1 Firmware Tool Released  (Read 337510 times)
ItzMatrox
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« Reply #120 on: April 23, 2016, 11:48:31 AM »

Hey, I updated the frimware. First of all. I couldn't install Lion without making modifications on it. Okay that wasn't too hard. But since I updated the frimware the LED next to the ISight camera is on as soon as I turn on the mac, and I can't use it. Can someone help me please?
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miguej
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« Reply #121 on: May 21, 2016, 08:42:19 AM »

Hello,

I did the firmware upgrade from 4,1 to 5,1 long time ago. And, of course, install Lion.

But now, apple says that "Lion & Mountain Lion are dead" so I've tried upgrade to Mavericks...but no success at all.

Obviously, I known about EFI32 and so...but every time y did a bootable mavericks usb (from several methods) my imac doesn't boot.

If I use the "verbose" option it seems to get stuck at early start...usualy al "PCI" section...

Also (for information) I have used different usb sticks...

So, it is impossible upgrade (even installing) Mavericks on my mac?

Hardware changed to imac 4,1 --> Core 2 Duo T7200 and 4gb ram

Thanks
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miguej
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« Reply #122 on: May 21, 2016, 11:41:08 PM »

Update, here is a photo using verbose boot
(see attach)


* IMG_20160522_002817.jpg (196.06 KB, 1440x1080 - viewed 1240 times.)
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chukgek07
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« Reply #123 on: June 04, 2016, 03:49:41 PM »

I did the firmware upgrade iMac from 4.1 to 5.1 .
How to make work adapter miniDVI to HDMI ? It does not display on TV or video or audio.
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qlka8402
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« Reply #124 on: August 13, 2016, 02:09:40 PM »

Hello, im new user of iMac early 2006, i change processor to t7600 and i need change efi now from 4.1 to 5.1, what i must to do first? i have firmware tools, install it i reboot iMac and nothing. Always i have 4.1, why? Is any tutorial how to make 5.1 from 4.1 (youtube)?
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trdavis55
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« Reply #125 on: September 08, 2016, 11:37:11 PM »

The firmware tool is failing to install, quit unexpectedly.
I have changed the CPU to 2.33 Duo core, and am still using the original RAM.
Thoughts on how to complete the firmware upgrade?
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maxfix
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« Reply #126 on: December 25, 2018, 06:28:58 PM »

Any hope for iMac5,2 users to have more then 3GB RAM? I just tried 2 x 2GB and it gives me black screen on boot.
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