I tried to transfer files from the camera using wifi to no avail! I have an MSI laptop with Widows 10 and the 5300 has 1.03 firmware I think. It was the latest I could get a month ago. I could only "connect" to the 5300, but the camera didn't acknowledge it. I used Nikon transfer, also tried to set up a wifi hotspot and I didn't get anywhere. Of course, I did not read the directions, so there may be the right way! lol. Others may know, hopefully! Why don't you just put the sd card into the computer? I have forgotten to put my cards back in a camera a time or two, so I understand if that is why. I could put a fresh card in right when I pull the other one from the camera. Let us know what kind of computer and operating system that you have, that may be helpful! I am going to take a shot in the dark and say that Win 7, Vista, and possibly even 8 won't work, but who knows. There may be a program that will do it, possibly photoshop, which I don't have.
Rob