How To repair thunderbolt 3 firmware

[mn4888]

I have a motherboard, model ASRock Z270 Gaming-ITX, which is not working properly with Thunderbolt 3 (JHL6240). The rear Thunderbolt connector only charges, does not connect to USB or Extended PCIE, and is not discoverable via the “lspci” command. I've heard it mentioned that the Thunderbolt controller may have entered “Safe Mode” due to an incorrect setup, where the system is unable to discover the Thunderbolt controller. I recalled that the system I used for my first boot was previously installed on a Z170 motherboard. This motherboard has a DSL6540 Thunderbolt controller but it can only be used as a USB3. I tried to copy the SPI Flash of the Z170's Thunderbolt controller to the Z270 and found that the Z270's Thunderbolt controller was discovered by the “lspci” command but the name was incorrect, and the The TypeC controller (TPS65928) can't be powered up because of firmware mismatch. So I think I can fix my Thunderbolt interface by manually tweaking some information in the SPI FLASH, but I don't have access to the chip manual, can anyone help me?

Attached is the Thunderbolt 3 firmware for the Z270：

[JedG_Intel]

Hi mn4888,

Thank you for posting at Intel Community Forum.

As I've checked your concern, it seems that there is a much more appropriate support that you need to contact regarding this matter.

I recommend that you get in touch with your motherboard manufacturer as Thunderbolt is a technology that computer manufacturers customize for their platforms.

Please check this link for reference - Support Options for Thunderbolt™

Thank you for choosing Intel, and have a good one!

Best regards,

Jed G.

Intel Customer Support Technician

[JedG_Intel]

 Hello mn4888,

I wanted to check if you had the chance to check the information that I shared. Please let me know at your earliest convenience so that we can determine the best course of action to resolve this matter.

Best regards,

Jed G.

Intel Customer Support Technician

[JedG_Intel]

Hello mn4888,

I have not heard back from you so I will close this inquiry now. If you need further assistance, please submit a new question as this thread will no longer be monitored.

Best regards,

Jed G.

Intel Customer Support Technician