Please contact Cisco Sale or TAC to get download link.   Thanks Ahsan

Try Cisco Virtual Switch Update Manager http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/vsum/1-5-2/getting_started/b_Cisco_Nexus_1000V_Manager_Getting_Started_Guide_Release_1_5_2.html 

•Each uplink is assigned a SGID based on vmnic number (vmnic0 = SGID 0, vmnic1 = SGID 1, etc)•Each VM is pinned to a SGID in a round-robin fashion

what is your UCSM versionyou can check through CLISSH to FIconnect nxsho platform  software enm  internal  info vlandb id xxx  

 UDP port 4785 must open on firewall for L3 connectivity between VSM and VEM Ahsan