I had to use this tool to downgrade my 5470's tpm chip from a 2.0 to a 1.2. Bitlocker\MBAM on windows 7 x64 seems to be working fine now. Has anyone had any luck automating the tpm firmware downgrade in a task sequence?
http://en.community.dell.com/techcenter/enterprise-client/w/wiki/11850.how-to-change-tpm-modes-1-2-2-0 From: [email protected] [mailto:[email protected]] On Behalf Of Denzik, Josh Sent: Friday, June 24, 2016 2:35 PM To: [email protected] Subject: [MDT-OSD] DELL E5470 Bitlocker Pre-Provisioning for Bitlocker with MBAM All, Anyone having issues on the E5470, with pre-provisioning the drive for bitlocker using Windows 7x64? I have the newest BIOS update on the machine (version 1.05 May 5th 2016 release date) and no matter what happens after the last reboot, I am getting prompted for the bitlocker recovery key. I have seen the same issue on the E7470 and E5570; but after Dell released several BIOS updates the prompting for recovery key issue after pre-provisioning the drive for bitlocker was fixed. I also noticed that this model has a TPM 2.0 chip. I have added this hotfix for the TPM 2.0 support for windows 7 x64 as well. https://support.microsoft.com/en-us/kb/2920188. Has anyone come across any this? Dell?????? -Josh
