The Cisco NX-OS software consists of one NXOS software image. The image filename begins with “nxos”.
Copying the image to the switch’s bootflash or USB drive using an additional option in the copy command.
switch# copy scp: source image_name bootflash: image_name
Booting the Switch from the USB
loader> boot usb1:nxos.7.0.3.I3.0.269.bin