I can likewise add newer versions of firmware but do you ever prune out old versions? In this case is seems that the choice of firmware limited by the drivers specified by that version of yocto (via the kernel).
Regards,
Chris
From: ross.burton@intel.com Date: Mon, 8 Feb 2016 08:58:32 +0000 To: opensource@keylevel.com CC: yocto@yoctoproject.org Subject: Re: [yocto] Installing only part of linux-firmware