You can download the yocto source code here
https://source.sierrawireless.com/resources/airprime/software/wp77xx/wp77xx-firmware-release-12-components/#sthash.VQOzZQNn.mvJDJnaN.dpbs
To make the yocto image, just type make.
You can download the yocto source code here
https://source.sierrawireless.com/resources/airprime/software/wp77xx/wp77xx-firmware-release-12-components/#sthash.VQOzZQNn.mvJDJnaN.dpbs
To make the yocto image, just type make.