updating the bios should work. generally the update program should work but I think future updates to windows might start blocking the programs from running. You should give it a try but look below for more info:
generally, you would only do a update when you wanted to fix a particular problem.
for example 2011 machines do not have the proper USB bios updates to run usb 2.x correctly and some usb devices might hang.
the USB specifications were changed in 2012 so you want a bios dated after about april of 2012 for usb 2.x to work correctly.
(sometime in 2013 for usb 3.x to work correctly but you would not likely have usb 3 chips in your machine)
if you do update the bios be sure you look in the current bios for the current setting for the SATA controller. Most SATA controllers should be set to AHCI mode but it could be in IDE mode or RAID mode. When you update the bios all of the settings will go back to defaults and you will need to set the updated bios to the correct defaults. Back in 2011 IDE mode was a common default and it would work but would be much slower than AHCI mode.