Dell Latitude E7270/E7470 System BIOS 1.15.4, Bitlocker fails

E7470 laptop was running fine on BIOS 1.12.3 but received security advisory concerning AMT vulnerability.

BIOS 1.15.4 was just released to address concerns for security advisory CVE-2017-5689 / INTEL-SA-00075.  Applied BIOS revision to the E7470, but after applying it continued to prompt for Bitlocker code after each restart.  Unable to successfully leave Bitlocker protectors on without being prompted for code after each reboot so opted for reimage.

Ran through process of reimaging computer via MDT, but now receive error in smsts logs:

'ProtectKeyWithTPM' failed (2150694914)

Failed to enable key protectors (0x80310002)

Failed to run the action: Enable BitLocker.
The BIOS did not correctly communicate with the Trusted Platform Module (TPM). Contact the computer manufacturer for BIOS upgrade instructions. (Error: 80310002; Source: Windows)

Can someone please confirm issue with this latest BIOS and will need Dell to re-evaluate.

Thanks

T