I have just received a Latitude 15 5000 Series (E5550) with BIOS A07 installed. Looking through the drivers and software section for the device on the Dell webpage indicates that an update to the A10 BIOS was released on 30-NOV-2015. The changelog indicates that it resolves a specific issue that I am encountering. However, on download and install of the BIOS it fails with an error stating: "Cannot update a Latitude E5550 with a BIOS for a Latitude 5550". I have re-downloaded the update multiple times to verify that the download isn't corrupt. As well, I contacted Dell support via chat and he indicated that it was due to my OS being unsupported for the installer (Windows 10 Enterprise). Since the machine didn't have any use, I reinstalled Windows 10 Pro (knowing it wouldn't fix the issue) and retried the update. Failed again with the same error.
Curious if anyone else has encountered this and if they have been able to relay this information to someone at Dell who understands.