flashfxp is the best ftp i use for my xbox. but transferring a bunch of small files to and from the xbox is slow as hell.. a dashboard team came up with "boostmode" it really helps transfer small files.
http://forums.xbox-scene.com/index.php?showtopic=137059
has some info on boostmode and specs.. but u can prolly message one of the developers and they will gladly send the source for boostmode.
I know boostmode is not a normal ftp protocol but it would greatly help the people who use flashfxp for xbox.. thx for reading