There is a trick to doing it. This is Zodiac's mid 80s instructions for their Tourism, Grand Tourism, Futura and Grand Raid boats, etc. I'm sure the same technique will work for the FR boats too.
Release the inflation valves and allow the boat to deflate. Standing in the middle of the boat, pull the tubes together using the lace cuff so they meet in the middle. Standing at the transom, push it flat on the ground, then fold both cone ends in so they slightly overlap. Now, fold the transom over and over, pulling the tubes in. If you have someone else to help, get them to sit on the transom to expel air as you work your way to the bow. The bow should fold in before you finish up. If the boat has a painter fitted, use this to wrap around the entire boat and tie it off with a slip knot.
Zodiac used to supply their boats in bags (for the HD aluminium sections), but the boat itself went onto a drawstring sheet. This is easier, and might be an option if you can get hold of a spare one.