Thunderbolt 2 downgrade for proart z790

[loach678]

I see some mentions of a TB2 downgrade NVM tool, but not able to find a link.  Would like my UAD TB2 setup to work with my brand new board. 

#ASUSProARTz790

#Thunderbolt2

[Jiaszzz_ASUS]

Hello @loach678 

Thank you for reaching out to us. We apologize for the delayed response due to a public holiday in our region and any inconvenience this may have caused.
As verifying the specifications requires confirming the serial number, which should not be shared publicly, I have DM you earlier.
Please check your messages and provide the requested information at your convenience.

Thank you.