Geetha
Had your issue got resolved? If yes, we are going to close the discussion in 3 days. If you still need help, please feel free to reply with an update to this discussion.
Thanks,
Yixing
Read 3.1.5 USB Firmware Upload | www.denx-cs.de/doku , applies to any i.MX23 and i.MX28 system with USB OTG port available.