Release Date: July 22, 2025
Build Number: 25A5316i
Apple Silicon System Firmware Version: 13822.0.233
T2 BridgeOS System Firmware Version: Pending
New features and changes have been noted, and users are encouraged to contribute by clicking “Edit” at the bottom of this post if they discover anything new. In the context of issues, several have been resolved while some remain or are newly identified.
Users facing difficulties are again invited to use the “Edit” feature to report their experiences. Highlighted issues include the potential failure of alarms to sound when displays are in a prolonged sleep state (FB10086690).
A temporary solution is available: adjust the settings in “Settings > Lock Screen > Turn display off on ____ when inactive” to prevent the screen from going to sleep, albeit with reduced brightness. It’s important to emphasize that this version is not fully functional for daily use and some applications may not operate properly.
Details on non-working applications can be found in dedicated threads. Furthermore, memory management is an ongoing challenge across operating systems; users suspecting a memory leak are advised to restart their devices through the Apple Menu to resolve minor issues.
For clarity, when a new macOS version is released, all previously reported issues will automatically be categorized as “Untested” until reassessed. Persistent issues left in this category for three release cycles will be removed from visibility in future discussions.
macOS 26 Tahoe will be installed through a Delta Update available in System Settings. Note that it won’t install using a standalone installer.
Support is limited to specific models across the MacBook Air, MacBook Pro, Mac mini, iMac, Mac Pro, and Mac Studio series. Devices not listed are no longer supported for this version.
The last editing occurred on the document recently.
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