I jtag'd my 360 with the help of you guys around January.

Then life got in the way so I didn't play much of anything. Now I'm trying to add some games to the hard drive and I'm having a little trouble. I remember that I used to just hook up the 360 hard drive to my computer and transfer games to it:
HDD:\\Partition 3\Content\E5xxxxxxx\00000000\
...and it would work. I've tried that with another game and it's not working. Another site said to make a "games" folder like this:
HDD:\\partition 3\games\
I tried that and it's still not showing up when I put the hard drive in my 360.
Any ideas? This 360 doesn't have a disc drive, otherwise I'd just play the games normally.
Also, I just transfer the hard drive between my jtag box and my Live box, and I guess I had to update to go online because now when I turn on my jtag box it says security updates need to be applied. I say no and it goes to the dashboard, but then any game I try to play says it needs to be updated, and I can't play anything without applying the update.
So can I apply one or both of those updates or will they ruin the jtag?
Thanks,
Matt