[Pre Release] macOS Tahoe 26.2

[mnfesq]

11 hours ago, laobamac_yyds said:

Successfully completed the crack of the limit on the number of XHCI controller 15 ports for macOS Tahoe.

Please disable Kernel -> Quirks -> XHCIPortLimit and load the patch I made.

 

After successful patching:

  Hide contents

 

 

 

 

 

Patch preview：

 

  Reveal hidden contents

 

Patch file download:

 

XHCIPortLimitTahoe.plist 27.08 kB · 24 downloads

 

Notes:

①If you have installed the old USB environment extension of OCLP-Mod, please use Kernel -> Quirks -> XHCIPortLimit directly and do not use this patch.

②Be sure to disable Kernel -> Quirks -> XHCIPortLimit with this patch

③Maybe this patch will be merged into OpenCore in the future? But so far, there is none. This is the patch I made for BootKC of 26.2B1 using IDA decompilation.

 

I was hoping that this was the solution to the problem I am having of not being able to mount other devices using USB, specifically, iPhones and iPads.  I can mount USB flash drives.  Also, the iPhones/iPads can be charged when plugged into USB, just not mounted so that I can add music.  Unfortunately, with my hardware, using this patch prevented the USB drivers from loading and I lost all USB function.  Disabling the patches restored USB function but System Information still shows no USB driver loaded. The same is true with Hackintool.  Nothing I have tried will restore USB readings to those apps.

Edited November 11, 2025 by mnfesq

[LockDown]

10 hours ago, laobamac_yyds said:

Notes:

①If you have installed the old USB environment extension of OCLP-Mod, please use Kernel -> Quirks -> XHCIPortLimit directly and do not use this patch.

Hi @laobamac_yyds

No need to install OCLP-Mod>USB patches when using this kernel patches?

[laobamac_yyds]

13 hours ago, LockDown said:

Hi @laobamac_yyds

No need to install OCLP-Mod>USB patches when using this kernel patches?

If you need to use a USB wireless network card, you must install the old version USB patch of OCLP Mod.

 

XHCPortLimitTahoe. plist is only a compatibility option for XHCPortLimit in macOS Tahoe, as Quirk, which comes with OpenCore, is no longer available on macOS 26.

[laobamac_yyds]

It seems that some motherboards have lost USB 2.0 after using patches? Currently, it has been confirmed that ASUS ROG Z690-A and MSI Z790 have encountered this issue.

 

Is there any other function that needs to be patched besides the createPort(s) and setPortLocation in IOUSBHostFamily and AppleUSBXHCI?

[MaLd0n]

These patches killed USB2 on Z890 chipset

[laobamac_yyds]

16 hours ago, MaLd0n said:

These patches killed USB2 on Z890 chipset

yep,Z490-A also encountered this issue. But everything is normal for B760M-K and Z370-F.

 

I am searching for the missing patch points

[Anto65]

 

 

 

 

Spoiler

 

 

 

Edited November 12, 2025 by Anto65

[deeveedee]

The updates are getting easier.   I first tried the update with BluetoolFixup.kext enabled, but it broke the incremental update, so I disabled BluetoolFixup.kext and the incremental OTA update proceeded without issues.

 

Incremental Update

Spoiler

 

 

Specs

• HP Elitebook 850 G7 (i7-10610u)
• Open Core 1.0.6, SIP csr-active-config = <01000000>
• VoodooHDA.kext 3.0.3

Edited November 13, 2025 by deeveedee

[Oyecomova]

1 hour ago, eSaF said:

 

  Hide contents

 

26.2 (Build 25C5037j) vs OS 26.2 beta 2 (25C5037g).. ????

[deeveedee]

6 minutes ago, Oyecomova said:

26.2 (Build 25C5037j) vs OS 26.2 beta 2 (25C5037g).. ????

this says that the build version for developers is 25C5037j which is consistent with the posts.  Note that I have seen articles referencing 25C5037g, but that's not what my hack is showing.

Edited November 13, 2025 by deeveedee

[Anto65]

https://developer.apple.com/news/releases/

 

Spoiler

 

About this Mac , show

Beta 26.2 (25C5037j) 🤔  😅

[ichelash]

No Incremental Update for me...

Spoiler

 

[strangeron]

👍

[kaoskinkae]

perfect NEW: 

 

[bluenote56]

done 25C5037j . I have to fix usb and of course gpu but it works.

[deeveedee]

7 hours ago, eSaF said:

This is the latest Tahoe Beta Release!!!

I don't know why your '???' post was warranted. 

 

 

Because @Anto65 's initial post indicates 25C5037g

 

It was a simple, accurate observation.  Nothing more.  I don't know why the multiple exclamation marks and fiery anger were warranted.

 

EDIT: Articles like this and this and others also indicate 25C5037g.  There was clearly some confusion about the build number.  No need to get upset about it.

Edited November 13, 2025 by deeveedee

[jm26200]

hi all done

 

[BALDY_MAN]

im not reciving the 26.Beta 2 (25C5037g) in automatic updates  only got Beta 26.2 (25C5037j) ?

[laobamac_yyds]

It seems that only need two patch of __ZN16AppleUSBHostPort15setPortLocationEv and __ZN12AppleUSBXHCI11createPortsEv to break through the limit on the number of USB ports.

I don't know if this will improve the problem of USB2.0 failure caused by some motherboards after breaking through the limit on the number of USB ports?

 

 

IOReg Screenshot ：

Spoiler

 

Edited November 13, 2025 by laobamac_yyds

[MaLd0n]

1 hour ago, laobamac_yyds said:

It seems that only need two patch of __ZN16AppleUSBHostPort15setPortLocationEv and __ZN12AppleUSBXHCI11createPortsEv to break through the limit on the number of USB ports.

Send me these patches. I can test it in my z890 and z790.

[laobamac_yyds]

3 minutes ago, MaLd0n said:

Send me these patches. I can test it in my z890 and z790.

here

 

The two patches needed have been checked.

XHCIPortLimitTahoe.plist

 

I'll read your reply when I get back from school tomorrow night. It's 3:00 a.m. in China now. I'm going to have a rest first.

 

Bye~

[MaLd0n]

46 minutes ago, laobamac_yyds said:

Bye~

USB2 and USB3 working

[Alpha22]

[fspkwonx86]

if you're wondering what the kdk merge is doing simply turn off debugging (your in for a slow trip to hell if you don't) and use 26.0.0 , then type uname -a and it will tell you exactly what this means when sip is disabled, you have the ability to use the developer sdk seemingly unrestricted and will even say xnu-development as a consequence anything you used xnu for i would assume gets renamed to xnu-development while you're logging , unless you combine the two i don't think thats part of the method i think is what it says uses a separate boot disk, and is quite unstable and buggy at times but i never said it didn't work

Edited November 14, 2025 by fspkwonx86

[maly70]

8 hours ago, laobamac_yyds said:

It seems that only need two patch of __ZN16AppleUSBHostPort15setPortLocationEv and __ZN12AppleUSBXHCI11createPortsEv to break through the limit on the number of USB ports.

I don't know if this will improve the problem of USB2.0 failure caused by some motherboards after breaking through the limit on the number of USB ports?

 

 

IOReg Screenshot ：

  Reveal hidden contents

 

Hi, how to apply the patch, thanks for your time