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ziggy29

macrumors 6502
Oct 29, 2014
445
261
Oregon North Coast
I'll also add that the answer provided for the first Q&A question may be false or misleading, and hypothesizing Apple's reasons for cutting off support is conjecture. Big Sur officially supports an Ivy Bridge Mac (Late 2013 Mac Pro). When contacted, Intel support stated Ivy Bridge CPUs will continue to receive microcode updates to patch security issues if necessary, which are provided to the OEM (Apple) for distribution. According to Intel, there are no known security holes in Ivy Bridge processors that affect computers running macOS.

That would seem to include the 2012 Mac Minis, which have been desupported anyway. Gotta make people buy a new one!
 
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jackluke

macrumors 68040
Jun 15, 2018
3,315
8,030
To download a full "Install macOS Big Sur.app", from Catalina as many reported can be used CatalinaOTAswufix, while if you are already on BigSur beta, since it's locked with snapshot booting, you should use this: https://forums.macrumors.com/thread...unsupported-macs-thread.2242172/post-28740283

The BigSurOTAswufix (should work also on Mojave HFS+) requires AMFI disabled (nvram boot-args="-no_compat_check amfi_get_out_of_my_way=1"), you can use this ASentientBot method and reboot:
Code:
sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool true

After reboot just open BigSurOTAswufix and click "Software Update fix" button, don't worry it won't allow you to proceed with an OTA update or OTA full install, because the supported BigSur machine is not spoofed, after a reboot "Software Update" is again stock, so it just would let you to download a full install app from Software Update prefpane directly on the Applications folder.

edit:
if BigSur installer doesn't show from BigSur Beta try this:
sudo softwareupdate --fetch-full-installer --full-installer-version 10.16
 
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Helghast59

macrumors member
Jun 23, 2020
37
71

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mrbubzie1993

macrumors member
Oct 23, 2018
55
122
yup all I can say is there update servers are jack the heck out. Have a contact who works for apple pr and marketing.......five minutes after it was released in California they had 2.5 million download requests! I'm at about 3 hours right now with a direct fiber connection that average about 2GBps o_O
 
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djr004

macrumors newbie
Aug 12, 2020
5
11
Texas
Thanks to the new wonderful @jackluke UI graphical patcher (and his infinite patience...:))
I have Big Sur RC2 completely working (excepted SIRI) and quite fast on Mac mini 2010 and iMac 2013 (very fast and acceleration, 30 minutes installation)
I'm looking to install the public release, at least after however long it takes to download, on my iMac 2013. I'm searching now for @jackluke's patch info but wondered what steps you took to install on your iMac.
 

Jose C. Salazar

macrumors newbie
Jun 24, 2020
16
30
@jackluke thanks for your work!! i wanted to ask a question, I got a MBP mid 2012 and be able to test various betas with Barry patcher and wifi fix, lately I noticed my MBP getting really hot (almost 100c). I saw you also developed a installer, do you think it will make any difference? Or know what might be causing it? Haven’t installed too much stuff and don’t know if it is a Big Sur problem... maybe anyone having the same issue?
 

justperry

macrumors G5
Aug 10, 2007
12,161
9,272
I'm a rolling stone.
@jackluke thanks for your work!! i wanted to ask a question, I got a MBP mid 2012 and be able to test various betas with Barry patcher and wifi fix, lately I noticed my MBP getting really hot (almost 100c). I saw you also developed a installer, do you think it will make any difference? Or know what might be causing it? Haven’t installed too much stuff and don’t know if it is a Big Sur problem... maybe anyone having the same issue?
Use Activity monitor which process is using a lot of resources, especially the CPU tab.
 
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michelve

macrumors newbie
Nov 12, 2020
9
11
I currently have a 2013 iMac 27 inches. when i tried to download the latest update from the app store it says "Update not found" but when i try with my new macbook pro it works, what do i need to install the latest version?

could some one help here ?
latest links? apps? patches ??

thx so much

Screen Shot 2020-11-12 at 2.27.20 PM.png


Screen Shot 2020-11-12 at 2.27.13 PM.png
 
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jackluke

macrumors 68040
Jun 15, 2018
3,315
8,030
@jackluke thanks for your work!! i wanted to ask a question, I got a MBP mid 2012 and be able to test various betas with Barry patcher and wifi fix, lately I noticed my MBP getting really hot (almost 100c). I saw you also developed a installer, do you think it will make any difference? Or know what might be causing it? Haven’t installed too much stuff and don’t know if it is a Big Sur problem... maybe anyone having the same issue?

Right, BigSur since beta1 caused on any unsupported Mac overheating (I have even a doubt that those few who EFI bricked instead of OTA spoofing was a logic board overheat), because smc sensors are not correctly detected (probably are required some AppleSMC*.kext patches), I made a simple app from BigSur recovery environment, based on this: https://github.com/hholtmann/smcFanControl

I attach also my customised shell app, run it directly from Downloads folder, then open terminal use sudo -s and drag and drop "smc.command", for your MBP to detect average temperature use "CPU temp for Ivy Bridge" function.

Or you can use Macs Fan Control but "Auto" on BigSur won't work, just customise your CPU temperature range for adeguate RPM speed.
 

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Barry K. Nathan

macrumors 6502
Jul 6, 2018
386
1,145
Irvine, CA, USA
I have just released Big Sur Micropatcher v0.5.1. Release notes:
  • Updated patches for 2011 iMacs, thanks to Ausdauersportler.
  • A couple of patch-kexts.sh bug fixes. If patch-kexts.sh gave you an "internal error" during WiFi patching in v0.5.0, then it should be fixed in this release. (And if it is somehow not fixed, then the error message will be more informative.)
  • Considerable README updates, both to account for various recent patcher changes and to account for the fact that Big Sur is no longer in beta.
For now I've skipped many pages of old forum posts (roughly 15 pages I'd guess), but I'll see if I can catch up on them later (maybe this weekend?).

The final Big Sur release is taking a while to download, and there's other stuff I have to deal with today, so I might not be able to test it with my patcher until tomorrow. 11.0.1 RC2 works, though, so I expect the final release will as well.
 

richiemouse

macrumors newbie
Aug 17, 2020
5
5
Hi guys, I'm sure this is a very stupid question and I apologize in advance. To update from a previous beta to the final release, do I have to do a complete fresh install of Big Sur? Thank you for your replies and patience.
 
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