I have a z840 workstation, with the latest BIOS (M60 v. 2.34 May 18 2017), and a TPM 1.2_4.43, running Windows 10 Enterprise.
I need to update this system to TPM 2.0. I've downloaded the SoftPaq sp82147, but it only offers an update from TPM 1.2 to 2.0 if the TPM is already at version 1.2_6.40.190 or higher. So - from what I gather I need an intermediate update to bring the TPM up to 1.2_6.4.0 before I can upgrade to TPM 2.0
Can someone point me in the right direction?