I just want to say thank you all for your help
Alright listen up guys...
I did a little of fiddling around for my 1 gb
nano clone mp4
ACU7515
1) download MP3 Player Utilities 4.15 and install
Note: after installing this your computer will recognize you device as "adfu something " instead of "usb device".
2) now follow the instructions on installing the AdfuUpdate.inf file on this device.
3)then install MP3 Player Utilities 3.68
then find the firmware and recover it...