Comment 4 for bug 1575148

I realized that my laptop is using firmware BIOS MBP111.88Z.0138.B07.1402121134 02/12/2014, with the apple website listing an update available: at https://support.apple.com/en-us/HT201518, there's MBP111.0138.B16 (2015-002), which, in its page (https://support.apple.com/kb/DL1848?locale=en_US and also https://support.apple.com/en-us/HT205317) is described as "merely" a security update for EFI, removing some unused EFI functions.

If it doesn't matter, I'd rather leave the EFI firmware as is.