How to Fix Audio in macOS Tahoe (26.5.2 and older) for Non T2 Macs

[ghost]

This is the first and easiest way to get audio working in macOS Tahoe (26.0 to 26.6 Beta 4)
Step 1. Download the latest version of OCLP T2
Step 2. Download the KDK for corresponding macOS Tahoe version
Step 3. Open Finder, Downloads then select the Kernel Debug package file
Step 4. Download the Package (should take 1-2 minutes)
Step 5. Launch the latest version of OCLP T2 and apply root patches as normal

If the KDK doesn't fix audio after root patching follow the guide below.

This is for anyone who needs help to fix Audio in macOS Tahoe after applying root patches. Tested on Non T2 iMac (should hopefully work on T2 but untested)
Requirements: KDK and ALC kext downloaded (The HDA kext will not work)
Step 1. Download MyKextInstaller (https://github.com/Mirone/MyKextInstaller)
Step 2: Download the AppleALC Kext (it says on GitHub MyKextInstaller to use the HDA kext but when you're inside the app itself you have to use the ALC kext) https://github.com/acidanthera/AppleALC/releases/tag/1.9.7
Step 3: Launch MyKextInstaller
Step 4: Click on Install kexts
Step 5: Select the AppleALC.kext file
Step 6: If prompted to install the HDA kext, say No.
Step 6: Reboot your Mac (you won't have to rebuild or install OpenCore or redo Root Patches until the next macOS release)
There's NO KDK for 26.6 or 26.6.1 yet so stay on whatever version of macOS Tahoe you’re running for now. To work around screen sharing exploit enabled Firewall and block all incoming connections!

Originally posted by @jasondillontech-lgtm in #119

[albert-mueller]

With the refreshed patch set, is it gone?

[ghost]

Sorry I was busy using Linux last week on my Mac (huge mistake by me) but I hadn’t tested it but I assume probably not. I’ll look into it.

[ghost]

There's no KDK for macOS Tahoe 26.6 so I am testing to see if MyKextInstaller can still get audio patched in Tahoe. Odds are 50-50 but will update if I succeeded.

[ghost]

After reinstalling Tahoe, without a KDK, I can't get audio working. Would the 26.6 beta KDK work on stable 26.6?

[albert-mueller]

After reinstalling Tahoe, without a KDK, I can't get audio working. Would the 26.6 beta KDK work on stable 26.6?

Not sure, you can try. If there aren't major changes in the mainstream KDK from the beta KDK, I don't see why it shouldn't work

[ghost]

I tested the KDK for the final beta of macOS 26.6 and audio didn't work either. I posted an issue in the issue thread.