macOS Sequoia 15.5 Beta 1 - Bug fixes, changes, and more

[WilliApple]

Release Date ― April 2, 2025
Build Number ― 24F5042g
Apple Silicon System Firmware Version ― 11881.120.91.0.1
T2 BridgeOS System Firmware Version ― Pending

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New Features & Changes (Found something new? Please press "Edit" on the bottom of this post and add it here)
Resolved Issues
New Issues
(If you are encountering any issues, please press "Edit" on the bottom of this post and add it here)

Remaining Issues

• Picking desktop wallpaper colors from the Apple color picker no longer works.
  • Issue present since macOS 15.4
  • Workaround: Use a static color image

Untested Issues

• Alarms may not play when your display is asleep for a long period of time (FB10086690)
  • Workaround: Make your display not fall asleep in Settings > Lock Screen > Turn display off on ____ when inactive. You can turn your brightness off.
  • Issue present since macOS 13.0

Additional Notes

• Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.
• When a new macOS release comes out, all issues automatically go to "Untested Issues" until they are moved by someone. Issues that stay in Untested for 3 releases (beta or smooth) will be removed from all future threads. When there is a new macOS release, please be sure to let us know about the issue's status by moving it to either "Remaining Issues" or "Resolved Issues"
• macOS 15 Sequoia will be installed via a Delta Update in System Settings. Please be aware about this and the update won’t install with an installer.
• macOS 15 is officially supported on the following devices. If your device is not listed below, it has unfortunately been dropped by Apple. Any efforts of trying to get your Mac running macOS 15, including bugs should be discussed in this thread.
  • MacBook Air: Intel 2020, M1, M2, M3, M4
  • MacBook Pro: 2018, 2019, Intel 2020, M1, M1 Pro/M1 Max, M2, M2 Pro/M2 Max, M3/M3 Pro/M3 Max, M4/M4 Pro/M4 Max
  • Mac mini: 2018, M1, M2/M2 Pro, M4/M4 Pro
  • iMac: Pro 2017, 4K 2019, 5K 2019, 5K 2020, M1, M3, M4
  • Mac Pro: 2019, M2 Ultra
  • Mac Studio: M1 Max/Ultra, M2 Max/Ultra, M3 Ultra, M4 Max
• macOS Sequoia 15.5 Release Notes
• macOS Sequoia Overview
• macOS 15 Release Notes
• Apple Security Updates
• Become an Apple Beta Tester
• Full Installer (App Store) (Pending)
• Full Installer (Direct Download) (Pending)

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Feel free to add in any issues or new features that you have spotted in this release by clicking the "Edit" button below.

 

[Calibre5]

Straightforward update on my Mac Studio M1
15.70GB update from 15.4. Build no. 24F5042g

 

[Adora]

I's 15.7GB on my M3 iMac and M4 Pro mini too. That's the size of a full installer but there isn't one yet available to download. Both are still downloading the update.

 

[Adora]

Fans got very loud shortly before the first reboot, I never heard the fans before.

But now it's running and everything seems to work.

Edit: Other one running too.

 

[nortonandreev]

Safari is up to Version 18.5 (20621.2.1.11.5), Music is now at 1.5.5.20.

 

[arovik]

Anyone tried virtualization software on this?

 

[Calibre5]

Anyone tried virtualization software on this?

Windows 11 running well on VMware Fusion v13.6.3

 

[S8ER01Z]

Anyone tried virtualization software on this?

Windows 11 seems to be good on Parallels Desktop Version 20.2.2 (55879), no issues encountered.

 

[The Banker]

Any update on the availability of iPhone mirroring in the EU?

 

[smithrh]

Photos was updated. It updates the Library (and in at least my case, rebuilds it too).

I went from 15.3.1 and Photos is 741.0.130 there, to 15.5.0 and Photos is 760.0.160 there.

No substantial changes noted just yet.

 

[fleabttn]

Safari crashes a ton on twitch now.

 

[jmantn]

I was having issues with files not deleting since the 15.4 beta and with 15.5 beta the issue hadn’t gone away (I’d delete iCloud files (I do not use anything google or Dropbox) and they’d keep reappearing in my trash.

So I manually copied important files and restarted into recovery and wiped the system, reactivated my M1 Max MacBook Pro and reinstalled macOS.

Now when it starts up it says: The version of macOS on the selected disk needs to be reinstalled. Reinstall macOS or select another startup disk.

I’ve erased multiple times, ran fist aid on all internal volumes and drives and even did a reinstall on a brand new external ssd and the same message comes up.

Is there any way to fix without Apple Configurator or going to a repair location?


Update:

An Update, had to use Apple Configurator to restore via DFU and Restore which worked but a word of warning one of the Articles I read say the other Mac needed a recent version of macOS but does not state the other computer needs to be up to date. It forced me to update the other Mac to the latest macOS version before I could start the restore, also took about 5 tries to get it into DFU mode but saved me a trip to an Apple Store 100 miles away.

Updating the second computer took longer than the actual restore process. Amazed we still can’t do this from recovery or an iPad or iphone

 

[Adora]

Any update on the availability of iPhone mirroring in the EU?

I was waiting with this information because I wanted to know who always asks.

Sadly...

Lately I remembered having old license codes for older versions of those apps:

Reflector 4 | Screen mirror Android, iOS & Chrome OS to a bigger screen

Reflector is a wireless mirroring and streaming receiver for Android devices, iPhone, iPad, iPod, Mac and Windows computers and Chromebooks.

www.airsquirrels.com

Stream and mirror from mac to Apple TV, Chromecast, Reflector & more!

Supercharge AirPlay on macOS. Stream content and mirror your display to Apple TV, Chromecast and more! AirParrot is full of features that keep the show rolling.

www.airsquirrels.com

Could one of those maybe be used as an alternative?

 

[nortonandreev]

Wondering if this will ever git fixed.

 

[eco7777]

I've been using Macs since 1989. Since I could I have had the same background color on my Mac , seems apple finally found out how to F me and won't let me do it. The screen turns white when I try to get the color I have always used.

I couldn't find a good pic but it is kinda like the blue in this forum, a bit darker.

The pic doesn't do it any justice.

 

[flowrider]

^^^^Nobody's trying to F you. I don't have this issue - BUT remember this is Beta software☔️

Lou

 

[eco7777]

^^^^Nobody's trying to F you. I don't have this issue - BUT remember this is Beta software☔️

Lou

You are trying to, LOL.

 

[JoeSilver]

Please know, Memory Management has always been an issue on any OS (not just Apple's). If you believe there is a Memory Leak, please go to the Apple Menu > Restart > Restart to fix it.

🤔
In over 20 years using another OS (no, not that one) I have never needed to restart my laptops due to memory leaks, not even after a couple of days of uptime and intensive usage.
Out of curiosity, how often people experience this?