I've seen a lot of people having problems with this, I too had the same problem, So I want to help and I think I can make it quite Clear.
Heres how you get it working, 100%:
1) Connect your Xbox to your Router via Ethernet Cable
2) In EvoX go to System Settings.
3) If at the top your IP address reads: **0.0.0.0** then your FTP Client will not be able to connect to your Xbox.
4) In EvoX > System Settings - Change your Xbox's IP address from - **192.168.0.2** TO **192.168.0.3**
5) Turn the option of *STATIC IP* to **NO**
6) Go to the botom of System Settings and hit Save & Exit 7) Turn you Xbox off
8) Turn it back on
9) Go into System Settings
10)The top text which is blue should no longer say **0.0.0.0** but **192.168.0.Any Number from 0-255** for example, **192.168.0.70** is mine
11)Open up your FTP Client, Filezilla or Flash FXP.
12)Click on te Lightning Bolt in Flash FXP, select quick connect, and Enter the Xbox IP (the one thats in Blue in EvoX at the top) then user: xbox Pass: xbox
13) you SHOULD get into the list of folders now, bingo.
*sigh* .. exactly the ftp connection guide I posted about 4 years ago in the backups thread.. except you have missed the bits about how to set passive mode (needed by some network configs) and the need to reboot everything once set up.
Lol I just helped 2 users in the general section for FTP. I also made a guide, with pictures, and it even covered doing so on vista. Incorporate that, as the internet protocols 3 and 4 are used depending on vista/xp, and take pictures. We like pictures, however the gesture doesn't go unappreciated. Most posts from 4 years ago without hundreds of replies won't be easily found in the search, especially not knowing what keywords to use. Good point on passive mode configuration, something I do infact use though.