Easiest way to copy the files is over ftp, which only works if your 360 is JTAG.
Just extract the files to your hdd(pc) and simply connect over ftp to your 360.
Just remember that the files have to be under,
HDD1 (which is the hdd bay on your 360)
"content/0000000000000000/4B4E081D/"
its...