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Update: High Sierra is booted and running on a Late-2008 MacBook Pro 5,1! It works just fine by bypassing the system check and @parrotgeek1 's LegacyUSBInjector kext!


good day i was able to update my Late-2008 MacBook Pro 5,1 .. however my brightness controls do not work. did you have that issue and resolved it?
 
Try installing the Backlight Control Patch with the post-install tool.

thank you.. i install the patch and it did make the keyboard control buttons work and the grey brightness icon comes up now.. however the display brightness is not affected by the up and down. also when it goes into standby and i resume the display remains very dim ..i can see faintly that the screen is on.. but it does not return to full brightness ..i have to reboot to get it back on. i even installed the app "brightens slider" i can manually dim and brighten with app but when it goes into standby and resumes that app doesn't work either.
i have el capitan on a separate partition and everything works normal.. so i know its not a hardware issue.

i used high sierra version 13.3.02 that i downloaded on my newer mac for the install with your patch...on macbook 5,1 late 2008 ...i didnt download sierra from your link.. do you think that may be the issue?
 
Hi,

Thanks so much for the great tool! It extended the life of my 2009 MacBook Pro considerably, so I’m incredibly appreciative. I just purchased a brand new Mac, and was hoping to using migration assistant to restore from a Time Machine Backup from the old MacBook.

My question is - is there a way to remove all the patches once the system is restored on the new (supported) Mac? Or do you not recommend using migration assistant? I saw a few posts with instructions about how to remove specific patches, but I’d really like to remove all the patches on the new Mac, since it won’t need them. Thanks so much in advance!
 
thank you.. i install the patch and it did make the keyboard control buttons work and the grey brightness icon comes up now.. however the display brightness is not affected by the up and down. also when it goes into standby and i resume the display remains very dim ..i can see faintly that the screen is on.. but it does not return to full brightness ..i have to reboot to get it back on. i even installed the app "brightens slider" i can manually dim and brighten with app but when it goes into standby and resumes that app doesn't work either.
i have el capitan on a separate partition and everything works normal.. so i know its not a hardware issue.

i used high sierra version 13.3.02 that i downloaded on my newer mac for the install with your patch...on macbook 5,1 late 2008 ...i didnt download sierra from your link.. do you think that may be the issue?

I found that 'Night Shift patch' on my MacBook Pro 5,2 mid 2009 disabled brightness control and in fact I get the same result as you ie faint screen and needed to reboot every time my laptop went into standby/sleep. I resolved this issue by reinstalling 10.13.4 beta software using DosDude's patch, but not installing Night Shift and my MBP 5,2 work really well...no issues and the laptop wakes up instantly.....try this approach. I think the Night Shift patch needs updating!
 
Today's 10.13.3 supplemental update to fix Messages crash with telugu character went without problems on MacPro 3,1 when run from Software Update

Oddly, I am finding that the 10.13.3 Supplemental Update, when applied over the patched 10.13.3 full installation on a MacPro 3,1, results in a error dialog that some updates could not be applied. Weirdly, the only observable damage to the High Sierra installation is that DropBox disappears from the Finder.
 
Everything should work just fine in the iMac 8,1, except the WiFi as you said. The card can easily be replaced with a compatible one, such as a Broadcom BRCM4322 or Atheros AR5BXB112. Here's a link to one on eBay that will work.
Got the WiFi card from the link you provided. Works perfectly!

So, essentially, High Sierra works perfectly on an iMac8,1 if you swap out the existing WiFi with a Broadcom 4322AGN. I'm very happy now with my new Mac. Very fast for the age of the machine.

I appreciate the hard work done here. Donations sent.
 
Oddly, I am finding that the 10.13.3 Supplemental Update, when applied over the patched 10.13.3 full installation on a MacPro 3,1, results in a error dialog that some updates could not be applied. Weirdly, the only observable damage to the High Sierra installation is that DropBox disappears from the Finder.
Similar system as yours, but luckily so issues whatsoever with the recent or any other update.

Screen Shot 2018-02-27 at 8.12.07 PM.png
 
In a Mac Pro 3.1 Sierra runs like a charm. Made a clean Usb Installer with High Sierra 10.13.3
All runs fine except the AMD Radeon HD 7950 3072 MB. Fans high and cero performance. I suppose its not recognized, though I checked the patch in the Post Install
 
Hy folks ...
I had 1 unsupported mac ..
It s a
apple macbook pro ,17, early 2008,
MacBookPro4,1
with fusiodrive ,
and macos high sierra ;_)))
I had 1TB Musik on it that i from CDs that i yet not had.
How can i convert the filessystem without a freshinstall
on my Fusiondrive macos high sierra
to APFS ?
Thanks a lot .
 
Hy folks ...
I had 1 unsupported mac ..
It s a
apple macbook pro ,17, early 2008,
MacBookPro4,1
with fusiodrive ,
and macos high sierra ;_)))
I had 1TB Musik on it that i from CDs that i yet not had.
How can i convert the filessystem without a freshinstall
on my Fusiondrive macos high sierra
to APFS ?
Thanks a lot .

According to Apple, APFS is not supported on fuson drives yet.
 
Seeing as how you migrated from a system that was hacked to run on an unsupported mac over to a fully supported mac there might by many leftover modified files.
Downloading and running the 10.13.3 combo update might help correct these files and it certainly would not hurt anything.
https://support.apple.com/kb/DL1953?locale=en_US

Still seeing the SIP warning dialog when booting my iMac Pro. I believe I've cleared out the patched element that triggers this, but hard to say for certain. Installing the recent 10.13.3 supplemental update didn't address this. I'm hoping installing 10.13.4 will fix/revert this, but hard to say until that gets installed.

Any other thoughts while I wait? Not the end of the world but the dialog is a little annoying.
 
Still seeing the SIP warning dialog when booting my iMac Pro. I believe I've cleared out the patched element that triggers this, but hard to say for certain. Installing the recent 10.13.3 supplemental update didn't address this. I'm hoping installing 10.13.4 will fix/revert this, but hard to say until that gets installed.

Any other thoughts while I wait? Not the end of the world but the dialog is a little annoying.
Just run "sudo rm /Library/LaunchAgents/com.dd1.SIPLD.plist" in Terminal.
 
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Got the WiFi card from the link you provided. Works perfectly!

So, essentially, High Sierra works perfectly on an iMac8,1 if you swap out the existing WiFi with a Broadcom 4322AGN. I'm very happy now with my new Mac. Very fast for the age of the machine.

I appreciate the hard work done here. Donations sent.

That seller on eBay is probably pretty happy that we discovered that those cards work on Sierra/High Sierra. He's been the "go to" guy for supported wi-fi cards for these unsupported machines, going back to 2016 when Sierra was released, and I needed a card for my iMac 8,1 :)
 
In a Mac Pro 3.1 Sierra runs like a charm. Made a clean Usb Installer with High Sierra 10.13.3
All runs fine except the AMD Radeon HD 7950 3072 MB. Fans high and cero performance. I suppose its not recognized, though I checked the patch in the Post Install


Anyone can help me?

Thanks
 
I've been running Sierra and then High Sierra on my 2008 Mac Pro 3,1 for a long time now and SoftRAID is now telling me that my SSD as a part of my boot Fusion drive is exhausted and needs to be replaced. I have a new SSD and was going to build a new Fusion volume but I had to copy the boot volume somewhere first. I have an 8 TB external Seagate drive that was empty so I used Carbon Copy Cloner 5 to make the copy so I could boot from the USB drive and then rebuild the Fusion drive with the new equipment.

But the successful cloned external drive won't boot. Do I need to redo the post-install process with it? Or is booting from a USB device just not in the cards?
 
That seller on eBay is probably pretty happy that we discovered that those cards work on Sierra/High Sierra. He's been the "go to" guy for supported wi-fi cards for these unsupported machines, going back to 2016 when Sierra was released, and I needed a card for my iMac 8,1 :)
Maybe I need to pick up another, just in case :)
 
just wanna make sure will dosdudes patcher tool download the most up to date release of os10,13 (10,13,3) from apple servers ?
 
just wanna make sure will dosdudes patcher tool download the most up to date release of os10,13 (10,13,3) from apple servers ?
The few times I used the High Sierra patcher it always downloaded the current version, so no reason to think it wouldn't today.
The last version I downloaded using the Patch tool was 10.13.3.02
 
just wanna make sure will dosdudes patcher tool download the most up to date release of os10,13 (10,13,3) from apple servers ?
Yes, the way it works ensures that it always downloads the latest release from Apple.
 
ok thank you. just wondering though if we can use that to download from apples server why can't we enable the download from the app store ?
 
ok thank you. just wondering though if we can use that to download from apples server why can't we enable the download from the app store ?
Well, the wonderful patch-application from dosdude bypasses the Apple software download blockage from the App Store. Nice, isn’t it?
 
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