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I put Yelo on my xbox and everything seems to work except the dev mode. Whenever i turn it on I just see a bunch of lines all over the place and my screen goes black. I did an hour or two of searching but I couldn't find how to fix this. Can anyone please help?

http://forums.halomods.com/viewtopic.php?t=46410
Make sure you use any FTP except filezilla to ftp the config file.

I'll try that later or tommorow. I'll just uninstall everything and do exactly what you said. Also, i'm using FlashFXP by the way.