Z97 Extreme 4 TPM version support

Hello Xaltar,

I'm Paulo. I believe you're a bit mistaken regarding what you said.

I bought a cheap Z97 Extreme9 that I found in 2022 to build a more "modern" PC than my Z77 Extreme4, which I assembled in 2017. At the end of 2025, I bought the processor, a case and finally built the Z97 Extreme9, still using the RAM and graphics card from the Z77 Extreme4 (low budget? I'm below low budget, lol).

I already have Windows 11 running normally on the Z97 Extreme9, even without TPM 2.0. At work, on a newer company laptop, I use Windows 11 with all TPM 2.0-related encryption, signing, and security features disabled, since they are not required for my use case, which demonstrates that Windows 11 runs perfectly fine even without TPM 2.0, despite it being a Microsoft "requirement."

I came across support-related issues involving TPM and ReBAR. ReBAR already has mods that make it work.

A few months ago, I bought an ASRock TPM2-S module and started working on getting it recognized by the Z97 Extreme9, to prepare for a future where applications may require this chip.

Regarding TPM 2.0, I've been studying it extensively over the last few months and found Z97 Extreme4, Z97 Extreme6, and Z97 Killer BIOS versions made by ASRock that include TPM 2.0 support.

I spent a lot of time analyzing the BIOS modifications that added TPM 2.0 support to those boards. I've already identified the modified BIOS PEI and DXE modules responsible for TPM 2.0 support. Replicating them, however, is a much more complicated challenge that I'm still dealing with. Some DXE and PEI modules can be copied from the supported boards. The DSDT can also be extracted, modified to include TPM 2.0 support code, recompiled, and reinserted.

Right now, I'm working on the DXE modules that cannot be decompiled or easily updated and are unique to each motherboard, specifically AMITSE and SETUP, since they involve initialization addresses for the different hardware components on different boards. These would need to be recreated either from the original source code or through complete reverse engineering, because they contain new TPM 2.0 variables that must be initialized, along with additional BIOS memory allocations for those variables.

Within ASRock's internal files, everything I've done could likely be accomplished in minutes using the TPM 2.0 files and source code from those boards together with the original Z97 Extreme9 source code. I still haven't received any response from support. They may even already have a compiled beta BIOS for the Z97 Extreme9 in their internal archives. I hope, lol.

I'm still fighting...

The Z97 Extreme4 BIOS discussed in this thread, with TPM 2.0 support, has existed since 9 days after this topic was originally created by aoma08. I know the exact date because it was the easiest one to find, it's mentioned in forum posts and also on the motherboard's official page, dated from when it was released.
Just download the 2.60A beta (Z97Ex42.60A), which is still available today.
https://www.asrock.com/MB/Intel/Z97%20Extreme4/index.br.asp#BIOS

The Z97 Extreme6 BIOS with TPM 2.0 support was sent to user pollanonim, who requested it on the ASRock forum 8 days before aoma08 created this topic. He made it available through download links and DropBox links that are still working today.
Just download the 2.80A beta (Z97Ex62.80A), which is still available today.
https://forum.asrock.com/forum_posts.asp?TID=9091&PN=1&title=asrock-z97-extreme6-and-tpm2s-module

The Z97 Killer BIOS with TPM 2.0 support was sent to user drock88, who requested it on the ASRock forum 20 days before aoma08 created this topic. The original ASRock link no longer works, but user steridhh and others who likely downloaded it at the time, have made it available through DropBox download links that are still working today.
Just download the 2.60A beta (Z97Kill2.60a), which is still available today.
https://forum.asrock.com/forum_posts.asp?TID=9019&PN=1&title=fatal1ty-z97-killer-tpm

Finally, this shows that the Z97 Extreme4 has had official TPM 2.0 support from ASRock since 2018, contrary to what you told albetov1 based on limited information about the matter.

I hope this helps anyone who needs it. I'm replying more briefly to albertov1, who asked a few months ago, so that he can receive a notification if possible.