Direct download links for Cisco NX-OS system images like nxos.7.0.3.I7.9.bin
Utilize the NX-OS installer to verify compatibility and check if the upgrade will be disruptive or non-disruptive (In-Service Software Upgrade / ISSU). nxos703i79bin download link
You have two options:
Always verify the file before upgrading to prevent corruption. Use the file's MD5 or SHA512 checksum against Cisco's official records. Direct download links for Cisco NX-OS system images
switch# copy sftp://user@server_ip/path/nxos.7.0.3.I7.9.bin bootflash: nxos703i79bin download link