Using iPhone as flash drive?

I don't have enough memory on my Xbox to download a game, and I was planning on getting a flash drive today. However it started storming and I don't feel like dealing with driving in the rain and I know there are several apps that you can basically use your iPhone as a flash drive. Would that work for my Xbox?

Added (1). Before telling me to go get something, read the entire question carefully. Jesus Christ.

Just get a zip drive!

UHH, I can't say for sure, i've used other phone and mp3 players internal memory as a flash drive before and it worked.