The issue is likely coming down to the OS, as Windows 10 is a workstation OS and not an Enterprise. What you can try doing is downloading the 2008r2 version of the BIOS update, whish shares the same kernel as Windows 10, and see if it will allow it to run. Also, you can try to find another form of bootable media and run the bios update from a command prompt. Another suggestion is downloading OMSA Live ISO, and then running the RHEL 7 version of the BIOS update from the media when you boot to it. 
I am currently working on a PowerEdge R610 server that I have just purchased. I currently have the Xeon 5504 cpu's and upgrading to the XEON 5675. This requires a bios update to boot on the new cpu.  I am having a lot of trouble updating to the latest BIOS 6.6.0. I am to the latest IDRAC6 firmware. IDRAC6. My lifecycle controller does not have the platform update option menu!!!!!! This server is old and outdated. The current BIOS version is 1.3.6 and that was released in 2010. I have gone through everything I possibly can to update it and have failed at everything. I am currently running windows operating system for ease of use.  I have formatted a USB drive using rufus to the fat32 format which were shown in many forums online. I have tried downloading older versions of the BIOS and keep getting windows administrator will not allow permissions failure. These updates are coming from the dell support drivers and downloads page. 
Help!!!!!! Poweredge R610 Bios Update 1.3.6 to 6.6.0 Failure.