jyijyi
8
then you need to embed your application into legato.cwe
After that combine the legato.cwe with modem and yocto and mcu image into one image by swicwe tool:
https://source.sierrawireless.com/resources/airprime/software/wp76xx/wp76xx-firmware-release-17-components/#sthash.fdXjPVgZ.dpbs
https://source.sierrawireless.com/resources/airprime/software/swicwe/
Of course, updating the official spk file and then just update you .update file will be easier for you