Need to update Toshiba Portege TPM from v1.2 to 2.0, but updates require old TAuthOwner and Password

Petrushka 

Here are the specifications for the upgrade I found: 

This version of TPM Firmware Update from Infineon supports the update from version(s) 4.32.879.0 and 4.33.949.0 to version 4.34.1011.0 of the TPM Firmware. If you need it, you can find it on their website.

Unfortunately, it only up grades the TPM v1.2 to a later version of TPM v1.2 not to version 2.0. If you have TPM v1.2, you can only change the TPM hardware itself to v2.0 if that is even possible. In my case that is impossible so I need to get another PC with TPM v2.0 already installed, e.g. buy a new PC.