Precision 7920 TPM2 & M.2 question.

Hi All,

I'm finishing setting up my monster 7920 and have a few odds and ends to make it 100%. Google was no help so I'm reaching to a higher authority. TIA for all/any help:

1) TPM 2.0 upgrade. I downloaded/ran "DellTpm2.0_Fw1.3.2.8_V3_64", it rebooted the machine and threw an error: "Update failed: TIS_ERR_ActivateLocality". Can anyone shine a light on this issue?

2) M.2 question. This machine has a LSI/Megaraid 9460-16i raid controller to which the front and rear drive bays are connected. I also have a 4slot PCIe M.2 adapter which I boot from. Is this a good config or should I look for a better/different config? Also, on occasion I need to work on M.2s from other computers (could be SSD/NVME). can I just buy a M.2 carrier and plug it into a front drive bay? 

TIA,