UPDATE:

The Realtek audio driver update situation is atrocious, IMHO.
o https://i.postimg.cc/fR8yW1WS/driver13.jpg
o https://i.postimg.cc/wMYTbp2Z/driver14.jpg

1. I was on version 6.0.8967.1
2. Dumo said version 6.0.8988.1 was available
3. A Tenforums thread said the latest MS Catalog version was 6.0.8978.1
4. But a search on MS Catalog confirms version 6.0.8988.1 was available

I downloaded both cab files from Microsoft Catalog:
o The 6.0.8978.1 cab file installs easily (283 files)
o The 6.0.8988.1 cab file fails miserably (122 files)

That's just crazy.
o How are people supposed to know which cab sucks & which cab works?

Anyway, here's the syslog snippet for the failed installation process:
A. Go to the Microsoft catalog
o https://www.catalog.update.microsoft.com/Home.aspx
B. Run a search for just the specific version number reported by Dumo:
o https://www.catalog.update.microsoft.com/Search.aspx?q=6.0.8988.1
C. That finds a dozen hits, all of which "appear" to be the same.
o http://download.windowsupdate.com/d/msdownload/update/driver/drvs/2020/08/093e3550-965c-45c8-9092-81f74e78ebc2_a8cd15104ada5e9274bbc1a2d228c05f7533a 536.cab
Name: 093e3550-965c-45c8-9092-81f74e78ebc2_a8cd15104ada5e9274bbc1a2d228c05f7533a 536.cab
Size: 11116666 bytes (10 MiB)
SHA256: C7FCF77AA886D9B2ECC651CBC074A115408BE2ADABFC7627AE C4A3FBEB705B73
D. This only expands to 122 files, and not 283 like the prior version did.
Expand -F:* c:\tmp\cab\1.cab c:\tmp\cab
E. We've been down this road before...
a. It won't take the cab
b. And there are a hundred INF files
c. I tried installing a few INF files, but guessing is just crazy
F. Whatever this 6.0.8988.1 cab contains, it's not installable on Windows.
Unless there is a trick that nobody knows yet.

In summary, updating to the "latest" Realtek file is a hit or miss endeavor.
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