WSMAN Bios Update Files - Available Location

On page 5 of this document, it refers to python scripts.  When following the link to download, it appears they are no longer there.

https://downloads.dell.com/manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-r720_white%20papers99_en-us.pdf

Does anyone have a link to download these files:

a. [fw_inventory.py]
b. [fwupdate.py]
c. [fw_poll.py]

Thanks!