In regards to your inquire it will depend on the motherboard and the version that you are using. Some BIOS updates require a minimal "BIOS" or firmware versions before you can update it. In some cases, customers have motherboards with a BIOS version that was released 2 years ago and wish to update it to the latest one and it fails. Here at the technical support, we recommend to do it in a few steps and to read the release notes, in there you will be able to read the important information and requirements.
The 6 series motherboards require a BIOS update to utilize the third generation processors, but you need to update the BIOS to the transition version ( you can find more on the release notes ) via recovery method first and then to the latest BIOS.