I have download the file "fop2-2.27-arm.tgz" (13.7mb) via chrome on my mac, then went to my freepbx "Module Administration." From here I clicked on "Upload modules," I choose the file, click upload, I notice a percentage status in chrome during the upload process. When it finishes freepbx takes me to the "FreePBX System Status" page. I then navigate back to the "Module Administration" pages and look for the "fop2 module" only to realize the module has not either uploaded or worked because it is not shown under "Third Party Addon" or anywhere for that matter.

PIAF on Raspberry pi
Kernel Version 3.6.11+ armv6l
Freepbx Core 2.11.0.6