You can download for example fxp 326 open the build and push the files in to the build.I have tried it but it won't work.You will get bootolop as I got.The drivers need to be modified to work on xl.Btw to make a flashable zip you need to make a update script.
Thank you for reply.
One question, Can I directly use update script provided in zip file which I downloaded from qualcomm site?
or do I need to change it?
I won't flash it as it's not working but just curious.