Perhaps LVFS (Linux Vendor Firmware Service) and fwupd could replace DSU (Dell EMC System Update):

https://en.wikipedia.org/wiki/Fwupd

https://fwupd.org/

https://fwupd.org/lvfs/devicelist

https://fwupd.org/lvfs/vendorlist

https://forums.suse.com/showthread.p...UPDATE-support

For DSU installation instruction see:
https://linux.dell.com/repo/hardware/dsu/

https://www.dell.com/support/home/ch...e-v1.7/manuals