Mmmm ...
I'm not sure of the details of blade folding specific to the A109 ...however ...
Be aware that depending on where the aircraft is registered the folding/unfolding of main rotor blades may be allowed to be done by the pilot if he has been specifically trained AND approved to do so .... OR it may require a Licensed Engineer be present to attend to that task .... also it may be a requirement that an entry be made in the aircraft maintenance documents whenever this is done.
Good luck ..