Is X710 firmware downgrade from 17.5.10 to 16.5.20 is possible or not?

Hi Experts,

I would like to perform a downgrade scenario on X710 Nic firmware from 17.5.10 to 16.x or below versions. 

Please find details below,
pci@0000:81:00.0  eth10       network        Ethernet Controller X710 for 10GbE SFP+
pci@0000:81:00.1  eth11       network        Ethernet Controller X710 for 10GbE SFP+

dmidecode | grep -A4 "System Info"
System Information
        Manufacturer: Dell Inc.
        Product Name: PowerEdge R630
        Version: Not Specified
        Serial Number: <To protect you, your private information was removed from public view. All private data was saved to your private Case. DELL-Admin>

ethtool -i eth10
driver: i40e
version: 2.22.18
firmware-version: 5.04 0x800024c9 17.5.10

Is firmware downgrade possible on X710 from 17.5.10 to 16.x,15.x? 
Please let me know the what are the possible ways to do so.

Regards,
Sneha