Downloading the Current EFI for the 2015 MacBook8,1 Model? I checked the Mac product download pages and found no new firmware updates for the new 2015 MacBooks. I found many for the MacBook Pros, MacBook Airs, iMacs, and even the XServers, but the closest thing I found to "MacBook" firmware updates were for the older models. I looked at the release dates and they are relatively current. I would assume since Apple came out with the MacBook9,1 this year, they would have had EFI firmware download support for this newer model Mac.

Can someone give me a hand?
EFI updates are available from the command line:

softwareupdate -la


This is the same information as the App Store app shows. The tools check apple's entire catalog and then calculate locally if any updates are required. You likely are up to date, but this is how to check. 


https://support.apple.com/en-us/HT201518