I have been trying to check if patched AppleUSBXHCI.kext was fine for the Toshiba L750 USB3, but after patching, i found that it is not, it appears to be working, but freezes the computer when something is plugged into the USB3 port and the device doesnt work.
In the process, i have created a little Hex patching utility, to help keeping all patches together and make easier the patching thingy.
How it works:
If you need to patch a kext, move it to your desktop (the app will not patch and save a kext if it´s in S/L/Extensions folder).
Navigate inside the kext into contents/MacOs
Drag the Binary you will find there into the app.
Add the codes to be patched and the patches to the app.
Patch the binary.
Save the binary (the app will do a backup from the binary prior to patching).
Install the kext with your favourite kext installer.
PD: it can patch whatever Mac Osx Binary.
Original AppleUSBXHCI patches on insanelymac.
Download it here.