Got it to work today. Received the transfer cable, recently got a new xbox 360 slim along with NFL2k5. I followed the instructions in the following youtube video (user: doesnt conform), and got NFL2k5 ==> NFL2k13/2k14
HDE USB Hard Disk Data Transfer Cable for Xbox 360 Slim?
http://www.amazon.com/Hard-Disk-Tran...=operasport-20
How to Update Rosters on NFL 2k5 (Xbox 360)
https://www.youtube.com/watch?v=1V72YvsXQS8
Follow the exact steps in the video, at the about the 8:27 mark, since I could NOT right click on xplorer360 and insert folder, all I did was drag the file (49F9C2874A2D) from UDATA folder and into the xplorer 360. Close out/exit out of xplorer 360. Put the harddrive back into my xbox360 slim.