Hello
@starghost1100,
I would suggest testing the Asus ThunderboltEX3-TR on your Asus Z690 and/or B660 boards with original firmware first.
See what works and what does not work. If you then decide to try flashing the firmware, all of the files and instructions are located in
Section 8 of the
Quick Reference to Mini-Guides and Micro-Guides spoiler at the top of this post:
CaseySJ's Coffee Lake in Phanteks Evolv X ATX Case: Gigabyte Designare Z390 - i7-9700K - UHD 630 - AMD RX 580 (Please do not quote this build guide in its entirely. Post a link instead.) (See this post for how to refer to a Guide or Mini-Guide.) URGENT: Please avoid Clover 5123 and newer for...
www.tonymacx86.com
Here's what Section 8 looks like:
View attachment 540913
Please note that the modified firmware for Asus ThunderboltEX3-TR may or may not work well. I'm not sure how well it was tested.