A BIOS update to my PC reset the TPM only this week. I did get a warning that Bitlocker keys would be wiped as a result before acting at least.
(I believe this was because it was fixing an AMD TPM exploit - presumably updating the TPM code wipes the TPM storage either deliberately or as an inevitable side effect.)
(I believe this was because it was fixing an AMD TPM exploit - presumably updating the TPM code wipes the TPM storage either deliberately or as an inevitable side effect.)