Thank you for your reply.
I've been using ATK tools on the Window XP PC. but I failed to run ATK tool on the Window 7 PC.
As you know, ATK tools need Window 2000 or XP platform.
so, I want to make MfgTool downloading i.MX7 image on the Window 7 platform.
Firstly, I meet device driver issue on the Window 7 platform with i.MX27 download mode.