Hi I have the X920bt with the CNSD-310FM EU 2012 update. Do I need the CD-IU50V or CD-IU51V. I'm looking to use my Iphone 4 with appmode. Pioneer shows the CD-IU50V is the one for my unit but will it work with the update I have done.

CD-IU50V  & CD-IU51V are the same...except they made the wires inside a little larger for higher current devices like iPad is all.

Not sure if the update has any affect