Are you using SCCM 3rd party software update to update these BIOS components? It's worth a try I would say. Otherwise you might need to try looking into 

1. 3rd party update using catalog V3 in SCCM - https://www.anoopcnair.com/configmgr-dell-updates-catalog-v3-for-sccm-third-party-updates/ 

2. Best Guide for Dell Driver/BIOS Management Using SCCM - https://www.anoopcnair.com/download-dell-driver-management-using-sccm/