cancel
Showing results for 
Search instead for 
Did you mean: 

Thunderbolt Downgrade NVM31 Solution for Thunderbolt 2 devices

psikofunkster
Level 9

Hello,

Today i found this:

Thunderbolt Downgrade NVM31 Solution for Thunderbolt 2 devices

on my mobos bios and software section

https://rog.asus.com/motherboards/rog-maximus/rog-maximus-z790-hero-model/helpdesk_bios/

I'm used to update my hardware but what about this? this a downgrande, should i apply it or forget about it?  I read there is a risk involved so i guess the answer is no, but what was the problem on the first place? am i affected?

2,577 Views
1 ACCEPTED SOLUTION

Accepted Solutions

JohnAb
Level 17

As far as I understand it, z690 motherboards (and maybe Z790 too) were supplied with Thunderbolt firmware v31.0. Bios 2204 (and above) upgraded this firmware to v36.0 which was buggy and disabled support for Thunderbolt 2 devices. So you are probably on v36.0 now like me. You can find out by installing the Thunderbolt Control Centre - I have it installed, but can't remember where I got it from. I think it was from the Microsoft Store, but I can't find it now. 

Anyway, unless you are having issues, or don't even use Thunderbolt, then no need to do anything. It's just for those people having problems. On the other hand, I think that v31.0 might not properly support some Thunderbolt 4 devices, depending on what controller they use. This is just based on what I've read before, no personal experience. 


Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

View solution in original post

8 REPLIES 8

JohnAb
Level 17

As far as I understand it, z690 motherboards (and maybe Z790 too) were supplied with Thunderbolt firmware v31.0. Bios 2204 (and above) upgraded this firmware to v36.0 which was buggy and disabled support for Thunderbolt 2 devices. So you are probably on v36.0 now like me. You can find out by installing the Thunderbolt Control Centre - I have it installed, but can't remember where I got it from. I think it was from the Microsoft Store, but I can't find it now. 

Anyway, unless you are having issues, or don't even use Thunderbolt, then no need to do anything. It's just for those people having problems. On the other hand, I think that v31.0 might not properly support some Thunderbolt 4 devices, depending on what controller they use. This is just based on what I've read before, no personal experience. 


Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

psikofunkster
Level 9

Many thanks for replying JohnAb.

PerpetualCycle
Level 13

This showed up for my Z790 Dark Hero. Currently I am on NVM version 42.3.  Not sure if this is relevant for me. Asus should provide more information instead of just shoving a firmware downgrade to us with no explanation whatever.


ROG Hero XIII | 10900k @5.2 GHz | g.skill 2x32GB 4200 CL18 | ROG Strix 2070S | EK Nucleus 360 Dark | 6TB SSD/nvme, 16TB external HDD | 2x 1440p | Vanatoo speakers with Klipsch sub | Fractal Meshify 2 case

PerpetualCycle
Level 13

I was curious so I  downloaded the firmware downgrade zip from the Z790 Dark Hero support page and it did not even include a firmware to downgrade to! All it contained was a readme.txt and a shell.efi, no firmware file.


ROG Hero XIII | 10900k @5.2 GHz | g.skill 2x32GB 4200 CL18 | ROG Strix 2070S | EK Nucleus 360 Dark | 6TB SSD/nvme, 16TB external HDD | 2x 1440p | Vanatoo speakers with Klipsch sub | Fractal Meshify 2 case

It says you need to launch 'shell.efi' from BIOS. But don't do it, not unless you have problems. 

Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

It also says to extract the firmware file and shell.efi and load it onto a USB stick.

I am not going to do it, but just pointing out you can't if you want to without the firmware file.


ROG Hero XIII | 10900k @5.2 GHz | g.skill 2x32GB 4200 CL18 | ROG Strix 2070S | EK Nucleus 360 Dark | 6TB SSD/nvme, 16TB external HDD | 2x 1440p | Vanatoo speakers with Klipsch sub | Fractal Meshify 2 case

sdmf74
Level 11

Why Did Asus put the Thunderbolt NVM31 downgrade on the Maximus 13 Hero driver page?
I just checked in Thunderbolt Control Center and my most recent TB driver is NVM26. I dont think its supposed to be for Z590.

ASUS Maximus 13 Hero, Intel I9 11900k, EVGA GeForce RTX 3080 FTW3 ULTRA

NotAGamer_01
Level 7

Wasn't the purpose of the downgrade to give back the ability to be backward compatible with TB2 devices?

Many users lost the ability to connect to their TB2 devices based on the changed that the newer BIOS version made and people were asking for the ability to downgrade back to the earlier aspect.

If you are someone who need this you clearly know because you have been asking for it for quite some time.