https://www.lorier.net/docs/tpm are my notes with experimenting with the TPM in my T530. The trick is that the TPM will protect itself fairly aggressively, so before you start turn off the laptop, unplug the power and battery (if possible), and on the FIRST boot after you put eveything back together, go into the BIOS and clear the TPM. If the menu option isn't there, then you probably have to power everything off :)