macOS 11.3.1 Update

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Anyone know what this fixes? The link in the first post to the Apple support page has no information on what this update really fixes.

No corresponding updates for Mojave or Catalina (yet), so I am assuming it is a fix just for Big Sur. I wonder how long it will take before they are releasing 11.3.2, to fix yet another issue in Big Sur.

WebKit vulnerabilities
Today Apple released macOS 11.3.1 Update, a major software update to macOS Big Sur.​
You mean "patch" I guess as versioning goes "major.minor.patch (v1.0.0)".
No issues updating, except that I lost the bottom row in Safari's Top Sites, but I should count my blessings that it even still works.
O.C. 0.6.8
Ryzen 3700X
Aorus X570 Elite
RX Vega 64
I should have said in my previous post, update went as expected with no issues.
Update OK also updated to OC 0.6.9

11.3.1 update.png
Updated without issues. OC 0.6.7

Screen Shot 2021-05-03 at 3.45.41 PM.png
Screen Shot 2021-05-03 at 3.45.21 PM.png
OC 0.6.9. Started update and walked away. Came back, it was finished. Using my old USB SSDT and USBInjectAll.kext, and all USB ports are working. Sound, too.

Screen Shot 2021-05-03 at 7.07.21 PM.png
Primary and secondary disks updated individually to 11.3.1 today (OC 0.6.8). USBMaps.kext does not work for my setup... back to USBPorts.kext + SSDT-UIAC.aml and all is now OK.
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