macOS Big Sur Full Installer Database. Download Directly from Apple!

MrMacintosh.com - Download Full macOS Beta & Prod versions of Big Sur with one click!
Download Full macOS Beta & Prod versions of Big Sur with one click!

macOS Big Sur Final & Beta Full Installers

This database will contain download links for macOS Big Sur full Installer pkg files (InstallAssistant.pkg). This file is the same full installer that you would download directly from the App Store for Intel and Apple Silicon M1 Mac Computers. The InstallAssistant.pkg is stored on Apple’s servers and contains the full “Install macOS Big Sur.app”. Once downloaded, all you need to do is install the pkg and the full installer of Big Sur will be in your applications folder. This change was made when Apple revised the full installer for Big Sur. The InstallAssistant.pkg is not available for Catalina or Mojave.

If you are looking for macOS Catalina, Mojave, High Sierra, Sierra or El Capitan look here >

https://mrmacintosh.com/how-to-download-macos-catalina-mojave-or-high-sierra-full-installers/

UPDATED: 9/19/23

If you are looking for Apple Silicon M1 Full IPSW Restore files, go here >

mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/

NOTE: Depending on the browser you are using, you might need to right click and select “Copy link address”. Past this link into a new tab and it should start to download.

macOS Big Sur 11 Final Full Installer Download

Big Sur Production Download Version Build App Avail? Date
11.7.10 final installer          
InstallAssistant.pkg 11.7.10 20G1427   YES 8/11/23
InstallAssistant.pkg 11.7.9 20G1426   YES 7/24/23
InstallAssistant.pkg 11.7.8 20G1351   YES 6/21/23
InstallAssistant.pkg 11.7.7 20G1345   YES 5/18/23
InstallAssistant.pkg 11.7.6 20G1231   YES 4/10/23
InstallAssistant.pkg 11.7.5 20G1225   YES 3/27/23
InstallAssistant.pkg 11.7.4 20G1120   YES 2/15/23
InstallAssistant.pkg 11.7.3 20G1116   YES 1/23/23
InstallAssistant.pkg 11.7.2 20G1020   YES 12/13/22
InstallAssistant.pkg 11.7.1 20G918 16.9.11 YES 10/24/22
InstallAssistant.pkg 11.7 20G817 16.9.00 YES 9/12/22
InstallAssistant.pkg 11.6.8 20G730 16.8.60 YES 7/20/22
InstallAssistant.pkg 11.6.7 20G630 16.8.51 YES 6/09/22
InstallAssistant.pkg 11.6.6 20G624 16.8.50 YES 5/16/22
InstallAssistant.pkg 11.6.5 20G527 16.8.40 YES 03/14/22
InstallAssistant.pkg 11.6.4 20G417 16.8.32 YES 2/14/22
InstallAssistant.pkg 11.6.3 20G415 16.8.31 YES 1/26/22
InstallAssistant.pkg 11.6.2 20G314 16.8.20 YES 12/13/21
InstallAssistant.pkg 11.6.1 20G224 16.8.10 YES 10/25/21
InstallAssistant.pkg 11.6 20G165 16.8.00 YES 9/17/21
InstallAssistant.pkg 11.5.2 20G95 16.7.04 YES 8/11/21
InstallAssistant.pkg 11.5.1 20G80 16.7.02 NO 7/26/21
InstallAssistant.pkg 11.5 20G71 16.7.01 NO 7/21/21
InstallAssistant.pkg 11.4 20F71 16.6.01 NO 5/26/21
InstallAssistant.pkg 11.3.1 20E241 16.5.02 NO 5/3/21
InstallAssistant.pkg 11.3 20E232 16.5.01 NO 4/26/21
My Archive.org Link 11.2.3 20D91 16.4.08 YES 3/08/21
InstallAssistant.pkg 11.2.2 20D80 16.4.07 NO 3/01/21
InstallAssistant.pkg 11.2.1 20D74 16.4.06 NO 2/15/21
InstallAssistant.pkg 11.2 20D64 16.4.03 NO 2/01/21
InstallAssistant.pkg 11.1 20C69 16.2.01 NO 12/14/20
InstallAssistant.pkg 11.0.1 20B50 16.1.04 NO 11/12/20
InstallAssistant.pkg 11.0.1 20B29 16.1.03 NO 11/14/20

sha256 InstallAssistant.pkg Verification

Ver openssl dgst -sha256
11.6.8 ffb07f4c4fedfcb428941bb4052a5e48c32c3d5d76a8c026dcae110abaeb391c
11.6.7 274f5c81dcff6f7bc536066418959bab7aeb41848691831996602e689d0840a5
11.6.6 f80bdf6b8cfef4399f4ef8b6563611237521d5d3d780a0126d7b324b33709d12
11.6.5 dee8b604e1ef66f4385fa03cb57d29cbc7efef6c1e7f8740aefd37a268c2bb16
11.6.4 91f3b15c2d6ba7be6bac181632be0a3877fbaed18ae0225f07225da83244c147
11.6 6142d4200f415d1253c437bdfcc7911bfb568ed16de1f0350bbc76299940647a
11.5.2 57df690f7981706f0620cbcac678735f559e032aed26a7d4a3d611492de889ab
11.5.1 9455f003e3a78097e86ddc13c3c1e773a4d4c61512b185d2869d067c198951be
11.5 443fe76c856d399fb57f1a19fbd5beec463608bbc3812d6a40df0f8419a9ff9c
11.4 3374333d98ff267f3520ef1efcdae978ec87043be0f70b790b4b6cd0465b98d7
11.3.1 e75cf34dbf50342892d52a8f61269dfde92e28c014a13ef20d712e234907ba88
11.3 7009dad5da542b01147e86fe1bda191c2cea1439b42f82e65b5eb7d585e2e1b3
11.2.3 0fd7cf05746316145012fadcf266413bbb862b3dfb8b5e58d9b0ca1e98f57f01
11.2.2 66e93f82c90c4333bc2ca7c0ffbbe536834a162d2670b9d3cd6cf45614ba1c0c
11.2.1 5c9b4a85eb1248a5a6611f5a17c137d231c9674cf545b933c8571bbf150212a5

macOS Big Sur 11 Beta Full Installer Download

macOS Big Sur Beta Download Version Build Avail? Date
InstallAssistant.pkg 11.7.3 B2 20G1113 YES 01/11
InstallAssistant.pkg 11.7.3 B1 20G1102 YES 12/15
InstallAssistant.pkg 11.7.2 B2 20G1011 NO 11/16
InstallAssistant.pkg 11.7.2 B1 20G1008 NO 11/9
InstallAssistant.pkg 11.7.1 B3 20G916 NO 10/12
InstallAssistant.pkg 11.7.1 B2 20G912 NO 10/5
InstallAssistant.pkg 11.7.1 B1 20G908 NO 9/28
InstallAssistant.pkg 11.6.8 B3 20G725 NO 7/07
InstallAssistant.pkg 11.6.8 B2 20G720 NO 6/27
InstallAssistant.pkg 11.6.8 B1 20G715 NO 6/15
InstallAssistant.pkg 11.6.7 B2 20G710 NO 6/01
InstallAssistant.pkg 11.6.7 B1 20G704 NO 5/19
InstallAssistant.pkg 11.6.6 RC4 20G618 NO 5/04
InstallAssistant.pkg 11.6.6 RC3 20G614 NO 4/27
InstallAssistant.pkg 11.6.6 RC2 20G608 NO 4/20
InstallAssistant.pkg 11.6.6 RC1 20G604 NO 4/06
InstallAssistant.pkg 11.6.5 RC5 20G525 NO 3/02
InstallAssistant.pkg 11.6.5 RC4 20G521 NO 2/23
InstallAssistant.pkg 11.6.5 RC1 20G517 NO 2/16
InstallAssistant.pkg 11.6.3 RC2 20G409 NO 01/12
InstallAssistant.pkg 11.6.3 RC1 20G405 NO 12/20
InstallAssistant.pkg 11.6.2 RC4 20G311 NO 12/02
InstallAssistant.pkg 11.6.2 RC2 20G306 NO 11/17
InstallAssistant.pkg 11.6.2 RC 20G303 NO 11/10
InstallAssistant.pkg 11.6.1 RC 20G221 NO 10/18
InstallAssistant.pkg 11.6.1 B2 20G219 NO 10/14
InstallAssistant.pkg 11.6.1 B1 20G214 NO 10/07
InstallAssistant.pkg 11.5 B3 20G5042c NO 6/15
InstallAssistant.pkg 11.5 B2 20G5033c NO 6/02
InstallAssistant.pkg 11.5 B1 20G5023d NO 5/19
N/A 11.4 RC 20F71 NO 5/17
InstallAssistant.pkg 11.4 B3 20F5065a NO 5/11
InstallAssistant.pkg 11.4 B2 20F5055c NO 5/06
InstallAssistant.pkg 11.4 Beta 20F5046g NO 4/22
InstallAssistant.pkg 11.4 Beta 20F5046g NO 4/21
InstallAssistant.pkg 11.4 Beta 20F5046g NO 4/21
N/A 11.3 RC 20E232 NO 4/20
InstallAssistant.pkg 11.3 B8 20E5231a NO 4/14
InstallAssistant.pkg 11.3 B7 20E5229a NO 4/09
InstallAssistant.pkg 11.3 B6 20E5224a NO 4/01
InstallAssistant.pkg 11.3 B5 20E217a NO 3/24
InstallAssistant.pkg 11.3 B4 20E5210c NO 3/16
InstallAssistant.pkg 11.3 B3 20E5196f NO 3/03
InstallAssistant.pkg 11.3 B2 20E5186d NO 2/18
InstallAssistant.pkg 11.3 B1 20E5172i NO 2/02

InstallAssistant.pkg?

The InstallAssistant.pkg is just a standard package that includes the full macOS Big Sur installer.app. All the pkg does is install/move the app to your applications folder. Let’s take a closer look.

MrMacintosh.com macOS Big Sur 11.2.3 via SUS Inspector
macOS Big Sur 11.2.3 via SUS Inspector

I am using SUS Inspector to view the full installer for macOS Big Sur 11.2.3. You can see the InstallAssistant.pkg file listed. You can also see the direct download path from Apple’s servers. The link does not last forever. For example, the download link for beta full installers only seem to last for a month or so.

Production links last a little longer. For example 11.2.1 is still available but 11.2 is not. This database will be updated when a new full installer is released.

Thank You

Have you sent over version information to me? THANK YOU!

A big thanks to Eric Holtam @eholtam. When I need to verify something in SUS, he always lends a hand!

Also thank you Hannes Juutilainen @hjuutilainen for creating SUS Inspector. This is a top 5 app for me!

Download full macOS Big Sur Installers

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130 thoughts on “macOS Big Sur Full Installer Database. Download Directly from Apple!”

  1. thanks a lot for the 11.6.1 installer link, somehow i sleep better if i got that on a local drive. online might be offline in the hour of need.

  2. I think your site is being blocked now. Keep receiving a page that is unreachable. “This site can’t be reachedhttp://swcdn.apple.com/content/downloads/16/05/071-32414-A_33YH16R8HF/28ment5qr993c0l9i1qbh4fuknli9wzglp/InstallAssistant.pkg is unreachable.
    ERR_ADDRESS_UNREACHABLE”

  3. MBP NOT OPENING BOOT PICKER 🙃 HELP!
    Hi!
    I have a MBP 15 mid 2012 (10,1) running Catalina and the built in display is not working – I use an external monitor via HDMI. (And the battery is dead, it shows 1% charge)
    I’d like to upgrade to BigSur.
    I prepared the USB drive following instructions on your last YouTube guide.
    When I boot up holding the Option key the fans are spinning, but nothing happens, and the external display doesn’t show anything.
    I tried hitting the left arrow twice, then return, then left once and return (like you do in the ULTIMATE GUIDE video) thinking the options would be “displayed” on the built in monitor. After a long while it boots normally.
    I tried to select the startup disk in system preferences, but the USB drive is not there, it just show the internal ssd.
    I then tried cleaning up my Mac with Onyx, resetting PRAM and SMC, to no avail…

    IN SHORT: any suggestion on how to boot from the EFIBoot on the USB drive?
    Or installing the EFIBoot on the internal SSD could do the trick? What potential issues would cause the latter?

    Thanks

  4. THANK YOU for these links!

    2019 MacBook Pro refused to upgrade from Catalina — so much time wasted…

  5. Cant seem to find the Patch Sur link, Github easy the page no longer exist…Is there any other link I van download the latest Patch Sur?

  6. Hello!
    I’m trying to download BiSur 11.3.1 but the download always stopped in 1,03GBs. Could you review the link? I need urgently these version for a customer.
    I appreciated if you can help me.

    Thank you so much for your work in this webpage.

    Best!

  7. Thank you for such detailed explanations on how to do this install, its crazy that machines that can still run so well are being forced into obsolescence. I have a MacPro 3.1 with an NVIDIA GTX680 graphics card running Mojave very nicely thanks to the DosDude patcher. I have been trying to install Big Sur (11.5.2) using OpenCore Legacy (2.4) onto a 1TB Samsung SSD and following your instructions. I get as far as the reboot following the big Sur install and then I get the apple logo on black with a progress bar that gets at about 40% and then just hangs. I’m guessing that one of the patcher settings needs to be changed but not sure which one. I have used the default settings of the patcher but am wondering if the NVIDIA card makes a difference. The machine also has upgraded airport card and bluetooth.

    Hardware Overview:

    Model Name: Mac Pro
    Model Identifier: MacPro3,1
    Processor Name: Quad-Core Intel Xeon
    Processor Speed: 3.2 GHz
    Number of Processors: 2
    Total Number of Cores: 8
    L2 Cache (per Processor): 12 MB
    Memory: 32 GB
    Boot ROM Version: MP31.006C.B05
    SMC Version (system): 1.25f4

    NVIDIA GeForce GTX 680:

    Chipset Model: NVIDIA GeForce GTX 680
    Type: GPU
    Bus: PCIe
    Slot: Slot-1
    PCIe Lane Width: x16
    VRAM (Total): 2 GB
    Vendor: NVIDIA (0x10de)
    Device ID: 0x1180
    Revision ID: 0x00a2
    ROM Revision: 3731
    Metal: Supported, feature set macOS GPUFamily1 v4

    Apple Bluetooth Software Version: 6.0.14d3
    Hardware, Features and Settings:
    Name: Mac Pro
    Address: 00-23-6C-BA-D3-93
    Bluetooth Low Energy Supported: No
    Handoff Supported: No
    Instant Hot Spot Supported: No
    Manufacturer: Cambridge Silicon Radio
    Transport: USB
    Firmware Version: 1965

    WIFI
    Card Type: AirPort Extreme (0x14E4, 0x8E)
    Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.102.31)
    MAC Address: 00:26:08:fa:a8:f4
    Locale: FCC
    Country Code: GB
    Supported PHY Modes: 802.11 a/b/g/n

  8. Did anyone try to install and patch

    iMac 12,2
    27″, i7(original i5), AMD 6970M1024

    Seems I’m the only interested in updating to Big Sur, searched the net, but couldn’t find anyone yet who has done this to the 12,2 with the non-metall AMD 6970M grafic card

    This is an productive system, so I don’t want to brick it, as I use it every day

    1. Hi Mike, Prior to upgrading my gpu to a GTX-780m, I was using 11.2.3 and it was okay… but not suitable for a production machine. (i.e. Logic Pro X crashes randomly) Numerous graphics artifacts and undesirable behaviors were just a few things I could not live with. However; if you bite the bullet and upgrade your imac with an SSD, GPU, Wifi, and Ram this iMac becomes a beast! Upgrade that iMac! You won’t be disappointed, Montery runs smooth as butter! Good Luck!

  9. Hello there! I have a 2012 Macbook Pro that I upgraded to Big Sur a few months ago. It always boots on the progress bar instead of the normal apple logo. How can I fix this?

    1. I am using an M1 MacBook and by default the boot screen was always an Apple Logo with a progress bar, I think it might’ve been different in previous versions of macOS and that is why you might have a confusion. If this is not what you meant, please share a screenshot of your boot screen.

  10. The open core terminal shows a different set of options because my MacBook Pro is 10,2 What are the setting needed to change to complete on your instructions for this model?
    Thank you

  11. Hi Guys, I want to help this community.

    To the Admin. Maybe you can figure something out from this.

    Prerequisites:
    Sandisk 64 GB USB-the larger the storage cap and non-sandisk, the more prone to errors in patching, and I don’t know why.
    OpenLegacyPatcher DOS version.
    Patcher Sur.
    11.15.2 image – 11.16 just doesn’t work regardless if it came from Apple or 3rd party servers. The USB installers just won’t complete to at least 90%.

    System:
    Macbook 6,1 2008

    Steps:
    1. Download the 11.15.2 using Terminal as shown in Open Legacy Patcher Website.
    2. Use Patched Sur to create the bootable media.
    EXPECT AN ERROR.
    3. Use OpenLegacyPatcher DOS to patch and create the EFI on the USB. Do Settings Patch following their website’s settings, change mac model to supported BigSur models, build, then create to usb.
    4. Reboot to USB EFI and choose Install Big Sur
    5. Finish installation
    6. Reboot to USB EFI and choose Install Big Sur
    7. Do Post Patch.
    8. Reboot USB EFI and choose the MAC OS
    9. Once booted, use Software Update to run 11.6
    EXPECT AN ERROR DURING REBOOT
    10. Reboot to USB EFI and choose the MAC OS (HDD icon)
    11. Finish the update and once booted run Open Legacy Patcher
    12. Build and this time , install to HDD instead of USB. (This allows HDD to have its own EFI auto load or ELSE you will need USB EFI just to boot Sur EVERY TIME)
    13. After Reboot, use Patched Sur GUI to do POST Patching in case 12 doesn’t work. Particularly, select moderately modify SMBIOS.

    THE ONLY ISSUE is that regardless of the NVRAM resets, your DISPLAY PORT external monitors will not work. I don’t know why.

    Tested 3x and worked. And I’m not sure why this is case. So Mr Macintosh, maybe you can figure this out and make 1 patcher that would incorporate your findings.

  12. Will the latest 11.6 installer work with micro patcher 2.0?
    Or do i need to use a specific Big Sur installer version to create the USB installer correctly.

    2012 Mac Pro 5,1

  13. When I download 11.6 its doing the same 32mb file after running the package as is 12 beta 7. Is there an
    Issue with the Big Sur installer also?

  14. Thanks for the hard work
    “Softwareupdate -d -r” works to get the version 11.6 InstallAssistant? I need to create a .pkg for MDM distribution.

    1. Not quite following. If I want to apply the .pkg via terminal or script to a host of mahcines, what is the recommended command and modifiers.

  15. I successfully used your procedure to load Big Sur on my iMac 12,21 with an upgraded metal gpu.

    When I attempted to upgrade my wife’s MacBookPro 9,2 I followed the procedure, but at the very end it failed to boot to the system. Perhaps I was impatient… but eventually I got to a message:

    “Your Mac needs a firmware update in order to install to this volume. Please select a Mac OS Extended (Journaled) volume instead.”

    It’s possible that the booting got totally convoluted, but I’m wondering if there was some setting I failed to set, e.g. SIP, or some switch on in the OpenCore Legacy Patcher that should have been off. I will see what the Firmware version is later tonight when I can get access to the machine again.

    I had tried to do an “update” install rather than a clean install… maybe a clean install would be more controlled. As it was I reinstalled Yosemite and restored all the files from the TimeMachine backup.

    Any opinions, guesses, etc would be helpful
    thanks

  16. Hi Mr.Macintosh
    I have MBP early 2011 with 512 ssd and 10 GB RAM and high sierra OS ,can I dual boot? I want to install big sur beside primary OS ( high sierra ).
    I made a partition (APFS) format and download bigsur-V11.5.dmg
    But I can’t install big sur for dual boot.
    Can you help me?
    I need xcode 12.5 for swift UI , And this is available on big sur.
    Thanks

  17. Hi, So I am trying to make a copy of Big Sur but I get this error

    APFS disks may not be used as bootable install media.
    An error occurred erasing the disk.

    What type of disks can I use?

  18. Hi i m Omer from pakistan i m trying to install mac big sur on my pc dell t 3500 workstation 16 gb ddr3 ram and xeon x 5660 2.8 hexacore but when i try to select the drive where i want to install ios it gives error that update cannot be install in this computer can i help bcoz from 3 weeks i got mad to do everything but here i stuck Thanks i m waiting for your answer 🙂

  19. Thank you for the hard work. Currently downloading. Will the same terminal method suggested by apple work to make this a bootable usb installer? It calls the .app –> will this pkg expand to .app file?

    sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume

  20. tested on Late 2012 Mac mini, 16GB ram, following step by step process and installing on external 120GB SSD. installation goes untill booting and stops with Apple logo at 3/4 of loading. Eventually, the installation has left 2 partition on the SSD: OS one and Update (wich is weird). Stucked at this point. PS Used the latest OCLP TUI and downloaded the last BigSur Install Assistant pkg from your link (maybe need a newer one as it is 3 month old?)

  21. Thank you for all your help. I am downloading to a pc, to fix the Mac. Suggestions or directions?

  22. imac 12,1 ( 21.5 inch – Mid 2011 )
    i5 2.5GHz – 12GB Ram – AMD Radeon HD 6750M 512 MB )

    I installed using OpenCore Patcher and did the Post-Installation
    but color was inverted plinking with mouse movement

    I solved that by reducing the color depth.

    But discovered that WiFi netwok is not working particularily when installing apps.

    so I am connecting the wired ethernet now as a quick solution.

    Any ideas?

  23. Hello, I can’t download 11.2.3 even if I copy the link, is there an other way to download the 11.2.3 pkg file?

      1. Hello, my m1 macbook air can’t download 11.2.3 too in Safari.
        Could it be related to MacOS monterey beta?

                1. Really sorry for the trouble Mr. Macintosh. Is there a faster server from which I can download 11.2.3. The download says that it would take a day to complete at that speed 😅Thanks a lot for your efforts Mr. Macintosh.

      2. Hi!

        It looks like 11.3.1 and below are no longer available. Tried it with 3 different browsers but it only downloads xml or giving 404 error

  24. Hi Mr MacIntosh and thanks for all our work on there, really precious stuff!

    Quick (probably stupid also) question : am I right in thinking the above full installers act just like the combo updates of yore? Let’s say I’m on macOS 11.4, if I download the 11.5.2 package and run from my machine, will it update the OS without deleting my files?

    Thanks very much in avdance!

    1. This is a no stupid question zone François 😀
      The answer is YES, the full install will act like the old combo updaters. If you are on Big Sur 11.2 and you download the latest 11.5.2 it will update you and retain all your files and settings.

  25. Re: Open Core Legacy Patcher
    I’m one of the 1000’s of MacPro folks that can not use a USB installer. My Mac Pro can not boot into the startup manager using the option key (This seems to be a very frequent problem according to Apple) (5,1- 3.46GHz-12 core, 2012.)
    I have 4 OWC SSD drives (running Catalina) in my Mac Pro, and have tried to change to old Hitachi spin drives, have zapped the PRAM (option-command-P-R) hundreds of times – still can’t boot into the startup manager. I can use the startup manager in the system preferences to change volumes, but USB drives are always listed as not bleesed/blessable.
    Is there a way I can run this without using a USB drive (like I did when updating from Mojave to Catalina-using DosDude1’s updater)?
    I have a Radeon 580 (metal capable card, and have updated both bluetooth (to 4.0), and WiFi (to AC.)

  26. Getting an error on download, file will not save.
    “`
    /Volumes/SEA 1/Downloads/Ch5QiNkp.pkg.part could not be saved, because the source file could not be read.

    Try again later, or contact the server administrator.
    “`
    Trying to upgrade to Big Sure from Catalina on late 2013 iMac.
    Tried about a month ago with no joy.
    Can you advise please.

    1. unless you are using a special patcher, your iMac late 2013 will not support Big Sur.
      Supported models are:
      MacBook (2015 or later)
      MacBook Air (2013 or later)
      MacBook Pro (Late 2013 or later)
      Mac mini (2014 or later)
      iMac (2014 or later)
      iMac Pro (2017 or later)
      Mac Pro (2013 or later)

    2. Are you trying with Firefox?
      Some browsers now only speak https.
      Firefox users can add the ‘s’ to the URL and download

  27. Sometimes 11.2.3 will say not available or can’t read target and fail when you try to save, but as of today it is there and took a few attempts to actually start saving.

    Thanks for this great resource Mr. Macintosh

  28. Hi,

    How can I download the installation package I have Macbook Pro early 2011 15 inch, I am trying to download but it is not connecting.

  29. Hi,

    I have a late 2003 IMac with latest Catalina. I was on Big Sur but had to factory reset and ditch backups and now I can’t get Big Sur back on – is the download 11.2.3 gonna work?

  30. I have a mid 2009 MBP, so far, the Install Assistant (the one from your video, about two months ago), worked. The EFI boot worked. Here’s where it gets tricky, as soon as the remaining time is up (which in my case is never only those 25 minutes, but way longer), it automatically reboots, and I’m met with three choices: Macintosh HD, macOS Big Sur installer and a third option; if I don’t select anything (because I roughly just have approx. 5 – 15 secs to decide), it “continues” with the installer (I can see the Apple logo and the progress bar), however, it gets stuck for hours (last time I checked today, before I shut it down, it was already up for 4 hours). Now, did I miss something? Is it supposed to take that long or should I choose an other option after the first “install” reboot? Unfortunately this part has not been covered in your video (you mentioned that it took you close to 1 hour).

    Kind regards and all the best from Europe.

    And also: thank you for your contributions via this website and your social media,

    Matthew

      1. Hello Mr. Macintosh,

        thank you for your swift reply; sorry that I didn’t answer sooner. To be honest, the latest version did not download properly, so I used both versions of your video. I now downloaded the “most recent one” (status: last week) and hope it’ll somehow work.

  31. Hey There, Hello from Brazil! Im having some troubles trying to get my MacBook Air Model 3,1 from late 2010 to upgrade from Mojave to BigSur! Any ideas? Let me clarify to you what I did: 1) I make a Bootable Usb Stick from .PKG (version 11.2.3) found here. Use the process you teached (createinstallmedia in Terminal – Using Mojave system) – Ok. 2) Applied OpenCore Legacy panther, copied to EFI Section using Legacy as you teached – Ok. 3) Choose EFI Boot in sequence Install BigSur – OK. 4)Begin install (setup to install, …choose install disk) it stops when 12 minutes lasts to finish. Computer Reboot, now in Apple’s Logo and progress bar goes until the end. Reebot again: Same Apples logo but here progress bar goes to a 30%, and stuck still on it. It stops, and nothing else happens. I wait for 6 hours to see some advance, but nothing. What I did wrong? Come back to Mojave I see the contents of USB disk: 3 partitions:” Big Sur DATA”; “Update”; and another one that Not Mounted by Mojave with 16GB – I figure out is: “Apple UDFI Ready-Only” with “shared support container”, however is not mounted by Mojave, because system limitations – incompatible media (system says)…please help me. Or there is another kind to upgrade to BigSur using another pacther?? help me!!!

  32. InstallAssistants from previous Big Sur releases are still available.

    Apple uses various IP addresses to store files into the /downloads/content repositories. These can be easily found through Google Search queries.

  33. I see that UniversalMac_11.5_20G70_Restore.ipsw is available as an IPSW – does anyone have the direct link for the 11.5 20G70 RC Install .pkg version?

      1. Hi,I cant, believe the last 3 updates have had no installer package?..2…ok..but…3?..is 1 off them there today Mr. Mac?…Im running os 11.5 3 beta on Bens Big sur Patcher…..and i would like 1 of them…..Tks if possible..Like your vidieos..

  34. Hmm. This works on my Catalina based 9,2 MacBook pro, but the Terminal commands must be different for older Macs, as my mid 2007 iMac running El Capitan does not recognise /Resources. I might try reinstalling MacOs.

  35. Hi Mr. Macintosh is it possible to directly downgrade from macOS Monterey Beta 2 to macOS Big Sur 11.4 without using a usb, can I put the installer into a partition and load the installer off it?

  36. Hi Mr. Macintosh can we directly downgrade form macOS 12 beta 2 to directly macOS Big Sur 11.2.3 directly?

  37. Hello Mr. Macintosh!

    Do you foresee an “Install Assistant 11.5 Beta 4 20G5052c” showing up in the “macOS Big Sur 11 Beta Full Installer Download” database in the near future?

    Thank you for the wonderful ‘go to’ resource.

  38. Hello Mr. M,

    Having downloaded latest Bug Sur full installer, I’m unable to verify InstallAssistant.pkg

    I logged in as Admin, opened Terminal, and cd’ed over to my admin acount and Download folder where the pkg sits. I executed ‘openssl dgst -sha256 InstallAssistant.pkg’. A few blank rows is all I got. No error messages. It just stalled. For good measure, I tried again using sudo. Have tried numerous times with same result.

    Would appreciate your input.

    Thanks.

  39. Hi. Tried following your steps but my iMac wont boot to the boot options with a wireless non-mac BT keyboard, will have to get a wired one soon. I have also noticed the OC patcher doesnt show the target OS as you mentioned, when it starts up. Does this mean there’s a problem. Your vid also states, “if you want to check the Big Sur file is the correct one…..”, does this mean only specific downloads will work? You have several versions available for download but you say you’re using 16.5.01 and thats the one you want. Thanks again for your video and assistance.

      1. Can I get macOS Big Sur on iPad can you please help me.As you have helped me several times with my Mac.

  40. please help me with a direct link to download any version of big sur i have a 2008 mac os high sierra 10.13.6
    any version that will allow me to use final cut
    please help me
    thank you!

  41. Yes, it is working. Strange….I tried few times and I always go the same error message…well, good news at least

      1. btw, any idea where I can find the old InstallAssistants.pkg file, besides the apple web-site?

  42. I can’t make a bootable installer from the 11.2.3 InstallAssistant.pkg. I need that particular version, not the newest.

    I’m able to move the installer to my Mac HD, and go through the motions of creating a bootable USB, but in the end it’s not (blessed) bootable. Doesn’t show up in Startup Disk prefs or Option at reboot.

  43. I have an issue and I hope you help me
    using installAssistant.pkg for big sur
    After installing the package I get 27 mb app that I can’t make a bootable usb drive from
    could you help me getting the 12 gb installation app?

  44. hi! i have such a problem after downgrade from macOS 11.3.1 to 11.2.3: iCloud Drive is unable to sync… messages, calendar etc. is synced but my iCloud Drive folders and files doesn’t show in iCloud Drive folder on my Macbook Air M1. Do you (or anybody) know how to fix that?

    Thank for this article 🙂

  45. i can’t downgrade from 11.3.1 to 11.3. Is there any way to keep downgraded? Thanks

  46. It should still be possible to create a bootable install disk from one of the older versions linked here, shouldn’t it?

    I ask because I’m currently running Mojave 10.14.6. I want to create a bootable install disk of Big Sur 11.2.3 (the most recent version that is compatible with a certain software I use daily).

    I downloaded 11.2.3 from the link above, ran the InstallAssistant.pkg. It appeared as it should in my Applications folder. I then ran the Apple Terminal commands to create the install disk on a USB partition I formatted correctly (MacOS Extended Journaled). It ran through the entire process and is NOT bootable. It’s not showing up in my Startup Disk prefs.

    Ideas?

  47. Thank you for this opportunity, the Big Sur 11.3 is working well on my unsupported MBP retina 2012 15″

  48. Thank u, Mr.macintosh. I am your fan reader from Taiwan. ^_^
    Your posts which is about macOS Full-installer are very helpful for me. ^_^
    But I have a little question about this sentence.
    “The InstallAssistant.pkg is not available for Catalina or Mojave.”
    Is the mean I have to upgrade my macOS Catalina to Big Sur
    by using Software update in macOS Catalina first ,
    After that step, then i can clean install or normal install/upgrade macOS Big Sur again ,
    …It means I can’t install Full-installs.app to upgrade my macOS in the past way, am I right ?
    Finally, thanks for your works and posts again ^_^

    1. Hello Walter, to clarify that sentence. I mean that you can only get the Big Sur Full installer via InstallAssistant.pkg. The installer was redesigned for Big Sur so any new OS like os 12 will be able to get the full installer this way. Mojave and Catalina installers were built a different way and do not have an InstallAssistant.pkg

      1. Sorry, english is not my mother language and I still keep leaning it weekly.
        Now I totally understand what its means for that sentence,
        and your explanation is very clear and easy to understand.
        So if I want to upgrade my macOS from Catalina to Big Sur,
        I have to use the “Software Update” way, or use your “Patched-Sur” apps, correct ?! ^_^
        Finally, thanks for your works and posts again ^_^
        Wish you have a wonderful working day, Mr. macintosh ^_^
        PS. I am using macOS Catalina in my backup MBP 2013 late,
        and my working MBP is waiting for fix in our apple retail store. T.T

  49. Can you please include Application Version for each?

    I have a Windows box used to download & upload these packages so cannot inspect the Application Version

      1. This is a brilliant idea – documenting the version of the Install macOS app. e.g I just grabbed the 11.3 RC8 version of the app, and Install macOS app version shows as 16.5.09. It’d be very useful for the
        everyday admin to just look at that number, come here, and think “oh, i have version 16.5.09…that translates to 11.3 RC8”

    1. I’m about to find out. I have a late 2013 iMac that isn’t supported as far as Apple is concerned.

      1. So I downloaded the full size 11.5.1 on Safari and the file size was 12.44GB but the speed was too slow so I opted to re-download using Opera and the speed was way faster but the file size was 11.6GB. Hopefully it’ll work out okay

      2. Hi,

        I have a late 2003 IMac with latest Catalina. I was on Big Sur but had to factory reset and ditch backups and now I can’t get Big Sur back on – is the download 11.2.3 gonna work?

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