How do I get SPDIF working?

[TheCreed]

I have the Z87M-D3H with ALC892. This motherboard does not have an SPDIF out, but it does have a SPDIF header. I bought a cheap SPDIF header to optical PCI bracket and SPDIF started working on Windows.

On Mavericks I cannot get it to work. When I go into Audio MIDI Setup I can see Built-in Digital Output. When I try to configure the speakers, it only shows 2 of them. My analog 5 channel works just fine (green, orange, black 3.5mm jacks). Any ideas?

 

[toleda]

On Mavericks I cannot get it to work

AppleHDA.kext edit required.
See M-Realtek_ALC_AppleHDA_Customization.pdf.zip/Procedures/7. Substitute SPDIF-2 Wire Output
To download pdf, select View Raw.

 

[TheCreed]

AppleHDA.kext edit required.
See M-Realtek_ALC_AppleHDA_Customization.pdf.zip/Procedures/7. Substitute SPDIF-2 Wire Output
To download pdf, select View Raw.

I got to the forum post you gave me and I'm a bit confused. It says

1. Edit Platforms.xml
   1. Open Item/PathMapID
   2. Open the current SPDIFOut (last item)
   3. Edit this path map as follows:
   4. Current:
      • ⁃ Item 0/NodeID/Number/30
      • ⁃ Item 1/NodeID/Number/6
   5. New:
      • ⁃ Item 0/NodeID/Number/17
      • ⁃ Item 1/NodeID/Number/16
2. Edit HDAHardwareConfigDriver/info.plist
   1. Open Item/CodecID
   2. Verify CodecID/LayoutID
   3. Edit ConfigData
      • ⁃ Find: 21171cf0 21171d00 21171e00 21171f40
      • ⁃ Replace: 21171ca0 21171d01 21171e43 21171f99
      • ⁃ Find: 21e71c90 21e71d61 21e71e4b 21e71f01
      • ⁃ Replace: 21e71cf0 21e71d00 21e71e00 21e71f40
3. Save, install and restart

What is it exactly that I'm editing? I understand that I'm going to have to open a file and replace a few things. Where can I find the file that I'm supposed to edit? Are these the correct steps to get my S/PDIF out working on Mavericks?

Edit:
Is it the AppleHDA.kext? What is the AppleHDA.kext v.2.n.n/higher?

 

[toleda]

What is it exactly that I'm editing?

Same document, see
Appendix

1. Native AppleHDA.kext Assumptions, Structure and Documents
2. Realtek ALC AppleHDA.kext (details)