Where to get latest Firmware for ASUS TPM-M R2.0 Module (13 PIN)?

@karakarga I would suggest you read this thread:

Asus / Infineon TPM firmware update?

In that thread guho2003 says:

My Asus 20-1 pin TPM module came with very new TPM 2.0 firmware 5.63.3353.

It does look likely but I can’t test to confirm it - you try at your own risk.

rasmorthil detailed the process they used to update the firmware here.