Here is the link for the micropatcher.
you could also check out Patched Sur, another patcher that makes it easy to install Big Sur on an unsupported Mac.
Hope this helps
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
macOS 11 Big Sur on Unsupported Macs Thread
- Thread starter dosdude1
- WikiPost WikiPost
- Start date
-
- Tags
- 10.16 macos unsupported
- Sort by reaction score
- Status
you could also check out Patched Sur, another patcher that makes it easy to install Big Sur on an unsupported Mac.
Hope this helps
There are two patchers, one is the micropatcher and the other is Patched Sur.
Refer to my post above with the links.
Hope this helps.
There are three patcher options listed and I was writing in particular about the @Barry K. Nathan micro patcher.
Help, I noticed that my battery said service so I reset the PRAM based on what others have said in the Apple developer forms that it could fix it. Now, when I boot I get the screen with the prohibitory symbol.
Do I reinstall Big Sur from the USB drive or is there something else I need to do first?
Help would be appreciated.
Do I reinstall Big Sur from the USB drive or is there something else I need to do first?
Help would be appreciated.
What is the third patcher. I’m aware of the micropatcher and Patched Sur right off the top of my head.
I remember reading something about OpenCore, would that be the third patcher?
My cMP 5,1 has a flashed Radeon RX-580 and Broadcom card. Here is my installation process:
Reboot and enjoy Continuity and Watch Unlock. cMP BlueTooth is notoriously unreliable, so mine does not always work reliably.
Below is fixcmp.sh. The volume is hard coded for simplicity. You will need to substitute your naming
- Download the installer and create a USB installer.
- Create a USB installer and apply the big-sur-micropatcher according to the instructions
- NO options for install-vars.sh
- Copy your edited fixcmp.sh to the USB stick
- Remember to run the EFI boot first as described above, this will set NVRAM
- Install Big Sur
- Boot into Big Sur to make sure it is running
- Boot into the USB Installer and open Terminal under Utilities
- Change to the USB directory and execute fixcmp.sh
Bash:
cd /Volumes/Image\ Volume
./fixcmp.shBelow is fixcmp.sh. The volume is hard coded for simplicity. You will need to substitute your naming
Bash:
#!/bin/bash
# Quick hack to patch for Continuity with Broadcom board
VOLUME="/Volumes/BigSur" # <--- edit to change to your volume name
# This should really have an error msg & exit
echo "Checking SIP - make sure it is disabled:"
csrutil status
echo "Remounting $VOLUME for rw access"
mount -uw $VOLUME
if (($?)); then
echo "Error: could not mount $VOLUME RW"
exit 1
fi
echo "Patching IOBlueTooth Continuity plist for cMP 5,1 with updated Broadcom card"
/usr/libexec/PlistBuddy -c "Set:Mac-F221BEC8:ContinuitySupport true" \
"$VOLUME/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"
if (($?)); then
echo "Error: could not set Continuity to true"
exit 1
fi
echo "Creating new snapshot"
bless --folder $VOLUME/System/Library/CoreServices --bootefi --create-snapshot
if (($?)); then
echo "Error: could not bless snapshot on $VOLUME"
exit 1
fi
echo "Removing old snapshots"
./zap-snapshots.sh $VOLUME
echo "Turning on SIP"
csrutil enable
exit 0thanks. this is the guide i following last night.
if there is no solution for the hidden wifi issue then i guess i will just leave it be. it works fine if i unhide the wireless ssid but thats not something i want to do. not having airdrop is no big deal at the moment.
I'm still on Catalina. I'm just browsing... nothing more or apps in. the background.
Attachments
If I put kexts in /Library/Extensions, do I have to do anything special to force the kextcache to rebuild?
Yes, thanks. All done now
Thanks. This is what has happened
All settled down now.I did read the readme and Mr BKN's notes and used a later option from the terminal within the new Big Sur OS.
All good now.
Thanks peeps!
Hi again guys,
Thanks to guidance from @Allistah, I was able to run the "remount-sysvol.sh", and write my Bluetooth fix to the temporary mount point. Apple Watch unlock and Continuity work wonderfully now
Next (and final!) step is to get my Brightness fixed via kext, currently stuck at 100% eye-scorching brightness.
As a reminder, I have a patched K2100M, running in an iMac 11,1 (Late 2009 i7-860). I must use OpenCore for Big Sur. And I do have Brightness controls when using High Sierra + OpenCore. So I have the correct kexts already inside my Catalina Loader.
Would appreciate some guidance on how to get the correct kexts (Lilu, WhateverGreen and AppleBacklightFixup?) properly into my System volume. I have definitely read and tried Modifying the System volume
Thanks to guidance from @Allistah, I was able to run the "remount-sysvol.sh", and write my Bluetooth fix to the temporary mount point. Apple Watch unlock and Continuity work wonderfully now
Next (and final!) step is to get my Brightness fixed via kext, currently stuck at 100% eye-scorching brightness.
As a reminder, I have a patched K2100M, running in an iMac 11,1 (Late 2009 i7-860). I must use OpenCore for Big Sur. And I do have Brightness controls when using High Sierra + OpenCore. So I have the correct kexts already inside my Catalina Loader.
Would appreciate some guidance on how to get the correct kexts (Lilu, WhateverGreen and AppleBacklightFixup?) properly into my System volume. I have definitely read and tried Modifying the System volume
Thank you. I enriched this file by adding my machine, "safe boot" works too. Is there any chance that the "software update" preferences will offer me future system updates with this modified file?
Some general IO glitches on my cMP:
- Build in USB 2 do not recognize HID devices plugged in after boot. I have USB 3 added and those ports work.
- BlueTooth device addition can be a pain. I find it easier to boot into Mojave or Catalina to add them.
- Build in USB 2 do not recognize HID devices plugged in after boot. I have USB 3 added and those ports work.
- BlueTooth device addition can be a pain. I find it easier to boot into Mojave or Catalina to add them.
I had a problem right at the end of my installation in that the kext patch command would always fail with "no such file or directory".
The command used was from JustPerry's guide as below
21c. Input "/Volume/Image\ Volumes/patch-kexts.sh /Volumes/***" and hit enter, when finished enter "reboot", both without the quotes.
*** Is your disk label
I'm not any kind of expert and very rusty at the command line but can someone explain to me why it doesn't start at
/Volumes instead of /Volume
and why it's Volumes/patch-kexts and not Volume/patch-kexts
It threw me for a while
Thank you, wise people
The command used was from JustPerry's guide as below
21c. Input "/Volume/Image\ Volumes/patch-kexts.sh /Volumes/***" and hit enter, when finished enter "reboot", both without the quotes.
*** Is your disk label
I'm not any kind of expert and very rusty at the command line but can someone explain to me why it doesn't start at
/Volumes instead of /Volume
and why it's Volumes/patch-kexts and not Volume/patch-kexts
It threw me for a while
Thank you, wise people
No, software OTA update requires anyway opencore spoofing board id to a supported BigSur Mac, I plan to update my previous spoofing setup when opencore developers release next 0.6.4 version (currently still in beta) specifying :
- Replaced "run-efi-updater" NVRAM variable with "BlacklistAppleUpdate"
Successfully upgraded my Mac Pro using OpenCore.
But there are some glitches when the mouse is over the Dock or using the hot corners. The image seems to freeze for some milliseconds, the audio works correctly during that.
But there are some glitches when the mouse is over the Dock or using the hot corners. The image seems to freeze for some milliseconds, the audio works correctly during that.
- Your patcher is already user-friendy for me, but maybe for beginners you could automatically download the installer pkg , execute it moving on Applications folder, launch the 2 fixes and the OpenCoreLoader addition to the pendrive
Typo, sorry about that, fixed.I had a problem right at the end of my installation in that the kext patch command would always fail with "no such file or directory".
The command used was from JustPerry's guide as below
21c. Input "/Volume/Image\ Volumes/patch-kexts.sh /Volumes/***" and hit enter, when finished enter "reboot", both without the quotes.
*** Is your disk label
I'm not any kind of expert and very rusty at the command line but can someone explain to me why it doesn't start at
/Volumes instead of /Volume
and why it's Volumes/patch-kexts and not Volume/patch-kexts
It threw me for a while
Thank you, wise people
It needs to be Volume.
21c. Input "/Volume/Image\ Volume/patch-kexts.sh /Volume/***" and hit enter, when finished enter "reboot", both without the quotes.
*** Is your disk label
Example
/Volume/Image\ Volume/patch-kexts.sh /Volume/SSD
SSD is my disk, insert the name of your disk there, I clearly said you have to Change the *** to the name of your disk, as in ... disk label.
Last edited:
Pretty sure this is easily solved if I am correct, restart, hold option, pick the EFI disk, hit enter, it will shut down, now try again.
If that does not work, boot into the Big Sur installer, and run the setvars.sh command.
Last edited:
This might be unrelated, does anyone have out of sync video and voice when playing youtube videos.
It starts of in sync but slowly gets out of sync more and more, I stop the video, the audio stops but the video still plays until the video syncs with the voice, it's easy to see the speakers lips speaking the last word from the audio, if I start the video again all is synced until it start to be out of sync again and gets again worse over time.
It starts of in sync but slowly gets out of sync more and more, I stop the video, the audio stops but the video still plays until the video syncs with the voice, it's easy to see the speakers lips speaking the last word from the audio, if I start the video again all is synced until it start to be out of sync again and gets again worse over time.
And again it was wrong, don't get it, I got it fixed in my last post, again fixed, must be a brain fart.
Please edit your post, edit the bit of my post please otherwise people stil see the wrong part.