Today Apple released macOS Big Sur Beta 11.0.1 Beta 2 Release Candidate (20B5022a) to Developers
MacOS Big Sur 11.0.1 Beta 2 was released on November 5th, 2020. The release comes about one week after 11.0.1 Beta 1. We were expecting RC or GM seed, but not yet! It’s possible that we will see the public launch of 11.0.1 at the Apple Silicon Mac “One more thing” event on November 10th.
That’s all folks! I hope that you were able to get all your Big Sur bugs fixed! This version is most likely the release that we will see this Tuesday!
If you are having issues getting Beta 2 11.0.1 to show up in Software Update, take a look at my Big Sur Beta troubleshooting article. – mrmacintosh.com/big-sur-11-beta-not-showing-up-in-software-update-troubleshooting/
NEW! My Mac Transition to Apple Silicon “Everything you need to know” Article – mrmacintosh.com/mac-transition-to-apple-silicon-everything-you-need-to-know-updated/
Keep an eye on my Big Sur Need to Know changes article. I will be constantly updating it as new info comes in. mrmacintosh.com/macos-big-sur-11-0-updated-index-of-need-to-know-changes-links/
macOS Big Sur 11.0.1 Beta 2 Release Candidate Patch Notes Summary
- 1. 1 – Resolved Issues
- 2. 1 – New Known Issues
- 3. 1 – Standing Known Issue
- 4. 1 – AppleSeed New Known Issue
AppleSeed Notes Link = appleseed.apple.com/
Developer Public Link = developer.apple.com/documentation/macos-release-notes
Apple DTK Mac Mini Notes = developer.apple.com/documentation/macos-release-notes/macos-big-sur-11-universal-apps-beta-release-notes
MacAdmin Patch Notes of Interest
- AppleSeed = 1 note – appleseed.apple.com
- Updating to macOS Big Sur 11.0.1 Release Candidate from previous versions of macOS might take significantly longer than expected. Data loss could occur if the update is interrupted. (59101197)
Previous Big Sur 11 Beta Releases
- 12. Big Sur 11 Beta 11.0.1 (20B5022a) Beta 2 RC – 11/05/20 Current Release
- 11. Big Sur 11 Beta 11.0.1 (20B5012d) Beta 1 – 10/28/20 – My Release Notes
- 10. Big Sur 11 Beta 10 (20A5395g) – 10/14/20 – My Release Notes
- 9. Big Sur 11 Beta 9 (20A5384c) – 09/29/20 – My Release Notes
- 8. Big Sur 11 Beta 8 (20A5374i) – 09/22/20 – My Release Notes
- 7. Big Sur 11 Beta 7 (20A5374g) – 09/17/20 – My Release Notes
- 6. Big Sur 11 Beta 6 (20A5364e) – 09/03/20 – My Release Notes
- 5. Big Sur 11 Beta 5 (20A5354i) – 08/19/20 – My Release Notes
- 4. Big Sur 11 Beta 4 (20A5343i) – 08/04/20
- 3. Big Sur 11 Beta 3 (20A5323l) – 07/22/20
- 2. Big Sur 11 Beta 2 (20A4300b) – 07/07/20 – My Release Notes
- 1. Big Sur 11 Beta 1 (20A4299v) – 06/22/20 – My Release Notes
macOS Big Sur 11 Installer Info
Note: Combo and Delta updates are not available as standalone downloads.
Full Installer.app
A Full Installer of MacOS Big Sur 11.0.1 Beta 2 RC is AVAILABLE!!
Link – developer.apple.com or installinstallmacos.py
Size = 11.98GB
Big Sur Beta Delta Update
This is the update is for updating from 11.0.1 Beta 1> 11.0.1 Beta 2 RC
Size = 2.81GB
Big Sur Beta Combo Update
This is update should be for updating from Beta 1-10 > 11.0.1 Beta 2 RC
Size = 4.50GB
T2 BridgeOS Update
The Version of BridgeOS for your T2 Security Chip was updated.
BridgeOS version = 18.16.12560.5.1
Size = 443.3MB
Product ID = 001-72556
- 7. Previous Beta 11 = 18.15.12551
- 6. Previous Beta 10 = 18.16.12402.5.2
- 5. Previous Beta 9 = 18.16.12390.5.1
- 4. Previous Beta 8 = 18.16.12380 BuildVersion 3
- 3.Previous Beta 7 = 18.16.12380
- 2. Previous Beta 6 = 18.16.12370.5.1
- 1. Previous Beta 5 = 18.16.10358.5.2
New Software Update Catalog URL
macOS Big Sur 11.0.1 Beta 2 Release Candidate (20B5022a) Release Notes
Overview
The macOS 11 SDK provides support to develop apps for Macs running macOS Big Sur 11. The SDK comes bundled with Xcode 12.2 RC, available from Beta Software Downloads. For information on the compatibility requirements for Xcode 12.2, see Xcode 12.2 RC Release Notes.
General
Known Issues
Important
Updating to macOS Big Sur 11.0.1 Release Candidate from previous versions of macOS might take significantly longer than expected. Data loss could occur if the update is interrupted. (59101197)
Accessibility
Known Issues
- You might be unable to pair certain braille displays using Bluetooth. (69794099)Workaround: Connect these devices using USB instead.
AppKit
Apple Security Bounty
- macOS Big Sur 11.0.1 Release Candidate is designated as qualifying for the 50% Apple Security Bounty bonus payment for issues that are unknown to Apple or reintroduced in this release. See Apple Security Bounty for more information.
Installer and Software Update
Known Issues
- When updating from macOS Big Sur 11 beta 2 to macOS Big Sur 11 beta 3 or later, you might be offered an unexpectedly large download rather than an incremental software update. (65753086)Workaround: Under the “Another update is available” text, click the “More info…” link. This reveals the incremental update where you can click the Install Now button.
- You might need to adjust Energy Saver settings so your Mac doesn’t go to sleep while preparing to install macOS Big Sur 11.0.1 Release Candidate. (63166401)
- If macOS Big Sur 11.0.1 Release Candidate is installed into the same APFS container as previous versions of macOS Catalina 10.15, system software updates can no longer be installed on the previous versions of macOS. (64411484)Workaround: Update the previous version of macOS Catalina to 10.15.6 or later.
Kernel
Known Issues
- Installing a new kernel extension requires signing in as an Admin user. You must also restart your Mac to load the extension. Kernel extensions using certain deprecated KPIs won’t be loaded. For more information, see Deprecated Kernel Extensions and System Extension Alternatives. (55068348)Workaround: During development, you can temporarily disable System Integrity Protection to allow these deprecated kernel extensions to load.
- New in macOS Big Sur 11.0.1 Release Candidate, the system ships with a built-in dynamic linker cache of all system-provided libraries. As part of this change, copies of dynamic libraries are no longer present on the filesystem. Code that attempts to check for dynamic library presence by looking for a file at a path or enumerating a directory will fail. Instead, check for library presence by attempting to
dlopen()the path, which will correctly check for the library in the cache. (62986286) - Use only absolute paths with the
--volume-rootoption ofkmutil, and don’t use a trailing/. (63773848) - Symbols exported by both xnu and Apple kernel extensions will change. Recompile your kernel extension with each update to macOS Big Sur 11.0.1 Release Candidate to ensure compatibility. (64262563)
Mac Catalyst
Known Issues
WebGLcontent inWKWebViewmight experience reduced performance. (70587571)- A
ToolbarItemwith automatic placement isn’t placed in the window toolbar. (63690384) - Select UIKit controls, control customizations, and methods throw exceptions when used in the Mac idiom. Unsupported controls and behaviors on macOS Big Sur 11 throw exceptions as follows:
Safari
Resolved in macOS Big Sur 11.0.1 Release Candidate
- Safari no longer quits unexpectedly if iCloud Tabs are enabled. (70625636)
SwiftUI
Known Issues
ProgressViewgeneric type signature has changed, adding thecurrentValueLabelgeneric parameter. This change doesn’t require any source changes, but it causes apps compiled using an earlier beta SDK to quit unexpectedly. (63580200)Workaround: Re-compile apps for macOS Big Sur 11 Beta 6 or later to resolve this issue.
Third-Party Apps
Known Issues
- You might experience kernel panics when using earlier versions of Parallels Desktop 16. (67358596)Workaround: Upgrade to the most-recent version of Parallels Desktop 16.
- Some third-party scripts might produce unexpected results due to the change in macOS version from 10.x to 11. (62477208)Workaround: Set
SYSTEM_VERSION_COMPAT=1in the calling environment, for example:$ SYSTEM_VERSION_COMPAT=1 legacy_script.pl
Wallet
Known Issues
isPassLibraryAvailable()doesn’t ensure uniform availability of pass library functionality between platforms and devices. (60697880)Workaround: Call a more specific API to check available functionality, such ascanAddPasses().
Xcode
Known Issues
- Legacy Xcode versions prior to 11.5 might unexpectedly quit when launched. (59991056)Workaround: Run the following command in Terminal:
defaults write com.apple.dt.Xcode DVTDisableMainThreadChecker 1, then deselect Main Thread Checker in the Diagnostic tab of the Run and Test actions for each scheme in your project.
