Thank you dear friend. I try it now and report
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macOS 11 Big Sur on Unsupported Macs Thread
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Thank you dear friend. I try it now and report
Installed patcher 4 beta 1. All OK. I haven't an ethernet cable but the functionality seems present. WIFI, Audio Bluetooth and USB webcam, mic, keyboard and mouse work... I can also use SIRI. Top right icons on menu bar fixed with the reduce transsparency trick. Only acceleration misses.
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Hello,
I tried a previous version and the WIFI worked (not the sound) when I had Big Sur installed on a partition with Catalina. I have removed the partition, reinstalled BS and now I only have BS. I tried "BigSur prelinkedkernel fix4" and the WIFI did not work for me ... Interestingly (and perhaps it is somewhat circumstantial) I installed the developer version of Safari from the Apple page:
Safari Technology Preview - Safari - Apple Developer
Safari is the best way to see the sites on iPhone, iPad, and Mac. Safari Technology Preview gives you an early look at upcoming web technologies in macOS and iOS.
And Tachan !!! I have WIFI working (not sound). It does not connect to Hidden Networks. I have to make my network visible and it can connect without problems. I hope it is not intermittent and that the WIFI continues to work because sometimes it takes a while to activate. I have detected that in BS the search in Spotlight sometimes does not work and sometimes it does ...
I work with a MacBook Pro 13 mid 2012
Thank you very much for the great work you are doing
Hello,
I tried a previous version and the WIFI worked (not the sound) when I had Big Sur installed on a partition with Catalina. I have removed the partition, reinstalled BS and now I only have BS. I tried "BigSur prelinkedkernel fix4" and the WIFI did not work for me ... Interestingly (and perhaps it is somewhat circumstantial) I installed the developer version of Safari from the Apple page:
Safari Technology Preview - Safari - Apple Developer
Safari is the best way to see the sites on iPhone, iPad, and Mac. Safari Technology Preview gives you an early look at upcoming web technologies in macOS and iOS.developer.apple.com
And Tachan !!! I have WIFI working (not sound). It does not connect to Hidden Networks. I have to make my network visible and it can connect without problems. I hope it is not intermittent and that the WIFI continues to work because sometimes it takes a while to activate. I have detected that in BS the search in Spotlight sometimes does not work and sometimes it does ...
I work with a MacBook Pro 13 mid 2012
Thank you very much for the great work you are doing
I made some different prelinkedkernel for group of machines, the prelinkedkernel fix4 is mainly for non-APFS legacy USB mac, for MacBook pro mid 2012 you should instead use this: https://forums.macrumors.com/thread...unsupported-macs-thread.2242172/post-28639778
I guess it's just a simply preferences plist that should refresh after, try from a BigSur terminal:
open /System/Library/CoreServices/Applications/Wireless\ Diagnostics.appThat should detect your Wifi network and refresh some preferences plist, then at next reboot you should have Wifi with AirDrop channel too.
Should I expect any response from the terminal? I still don't have WIFI or AirDrop after reboot ...
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In System Preferences the option and WIFI appears (before it did not appear), but it does not let me activate it.
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Let me check, I guess I need to update that prelinkedkernel .
I am uploading the new prelinkedkernel for 2012 machines that should fix Wifi and AirDrop channel, after I update my previous post.
edit:
updated also my previous post this should work: BigSur prelinkedkernel Wifi AirDrop fixes.zip
The attached file is only for APFS firmware machines: Sandy Bridge, Ivy Bridge and maybe also Haswell architecture.
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After reboot it worked perfectly !!!! WiFi and AirDrop.
I still have no sound output from the Mac's speakers, but it's not too bad because it works perfectly with headphones.
Thank you very much for all the work.
???????????????????
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By the way, Diagnostic App works now too... all good!
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Probably tomorrow there will be macOS 11 Beta 2...
bro, you make a crazy work again!
How you install to MB4,1? I still have machine here can be a tester!
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Hi, I have run this on my MBPro Mid 2012 and get the following, any help?
Code:
Welcome to the BigSur beta 1 prelinkedkernel AirDrop fix
this version applies also a patched prelinkedkernel for beta1 to include telemetry fix, legacy usb and maybe also sound and wifi
BigSur prelinkedkernel fix can't be executed as standard user if you want to suspend the script just press CTRL+Z
to apply this fix your current account password is required
otherwise the script can't process
Setting nvram parameter to enforce compatibility check
Password:
nvram: Error setting variable - 'boot-args': (iokit/common) not permitted
Done
Detecting and adjusting BigSur APFS Preboot
Volume Preboot on Preboot mounted
######################################################################### 100.0%
######################################################################### 100.0%
mv: rename PlatformSupport.plist to PlatformSupport.plist2: Operation not permitted
cp: ./com.apple.Boot.plist: Operation not permitted
Archive: /private/tmp/prelinkedkernel.zip
replace ./prelinkedkernel? [y]es, [n]o, [A]ll, [N]one, [r]ename: Y
error: cannot delete old ./prelinkedkernel
Operation not permitted
Done
After reboot your BigSur should use the prelinkedkernel instead of BootKernelExtensions.kc
and AirDrop channel should work
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.
[Process completed]Still not working after a reboot?
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Hi everyone, over her I was trying Big Sur on my iMac 14,1 Late 2013, so far everything works fine even some issue from Catalina has gone here on Big Sur (Charging iPhone without kill usbd process).
with the steps on this page I now testing Big Sur ParrotGeek.
Only one issue at first boot wifi was no connected, I had to switch off then switch on to start working.
with the steps on this page I now testing Big Sur ParrotGeek.
Only one issue at first boot wifi was no connected, I had to switch off then switch on to start working.
Hi there, just to say that I successfully used your prelinkedkernel on my mid-2012 Retina MacBook Pro (10,1), Wi-Fi and AirDrop now work flawlessly. Thank you.
Hi, what did you do to get this working? I keep getting an error when running from within BS -
Code:
nvram: Error setting variable - 'boot-args': (iokit/common) not permitted
mv: rename PlatformSupport.plist to PlatformSupport.plist2: Operation not permitted
cp: ./com.apple.Boot.plist: Operation not permitted
Archive: /private/tmp/prelinkedkernel.zip
replace ./prelinkedkernel? [y]es, [n]o, [A]ll, [N]one, [r]ename: Y
error: cannot delete old ./prelinkedkernel
Operation not permitted
Done
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When in Big Sur, I 1) launched the file BigSur prelinkedkernel AirDrop fix2 beta1.command 2) rebooted 3) done!
Darn it, wish mine was that simple. There has to be something I am doing wrong.
If you select System Profiler from About this Mac and click on the Extensions section, do you see two entries for AppleHDA? If so, the newer version from Big Sur is loading instead of the High Sierra one in the prelinked kernel. I fixed this on my MacPro 3,1 by mounting the root snapshot so that it is writable and deleting that.
Code:
mkdir /tmp/mntpoint
sudo mount -o nobrowse -t apfs /dev/disk7s5 /tmp/mntpoint
cd /tmp/mntpoint/System/Library/Extensions
sudo rm -fr AppleHDA.kext
cd ~
sudo bless --folder /tmp/mntpoint/System/Library/CoreServices --bootefi --create-snapshotUse 'df -k' to see what device the root snapshot is mounted as on your machine and use the first two sections of that. So if it is disk5s1s1, use disk5s1. After you complete those commands and reboot, the snapshot that you edited will become the active root and the Big Sur /System/Library/Extensions/AppleHDA.kext will be gone so that the prelinkedkernel one can load.
I didn't expect it to be that simple. Maybe I was lucky.
So I have tried this route and ended up with the message
Code:
Warning: you have multiple separate APFS containers to find your correct BigSur APFS Preboot type:but then keep hitting...
Code:
Volume Preboot on diskXsX failed to unmount: dissented by PID 0 (kernel_task)
Well, easiest way for achieving it:bro, you make a crazy work again!
How you install to MB4,1? I still have machine here can be a tester!
Prepare installer on a USB stick (as @jackluke and others described) and install to a „supported unsupported“ machine as i.e. the MB5,2 or some more recent C2D MBP.
Then take that drive (or clone it) to be used in the MB4,1.
For getting legacy USB function there,
use the prelinked kernel I prepared for that machine. Also audio and wifi can be brought up by adding/replacing the kexts and the on the running system do kextcache -i /
and kcditto
(both in terminal).
Prerequisite is SIP off and on one of the first boots (in single user mode) set nvram params to „-no_compat_check”, if not already done or installer re-set that.
Seems you don't have SIP disabled, because you can't use "sudo" on Preboot Volume, but first check this output from BigSur terminal:
nvram csr-active-configif you have another macOS Install (minimum version HighSierra) you can use from there the second script I included in the same folder.
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It's a simple script, but it does its duty, I wrote in case of multiple separate APFS containers to find your correct BigSur APFS Preboot or copy paste in terminal:
diskutil unmount Preboot
diskutil list | grep Preboot
(select the largest MB Preboot and mount)
diskutil mount diskXsY
X and Y are algebra variables means you have to select them from this ouput:
diskutil list | grep Preboot
you have to mount the largest MegaBytes Preboot Volume example: "disk5s3"
then you have to run example: "diskutil mount disk5s3"
follow these steps, launch my script again and it should work.
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I get all that.
it's 1s2 in my case. I do all that, but end up with the message again effectively looping back.