need firmware/drivers deatisl

[venudip]

please suggest for ESXi 6 update 5 version which driver and firmware version required

[Patrick Sparkman]

You can run either ESXi Standard/Enterprise, Enterprise Plus Editions etc.  The license key provided by Cisco will determine what VMware features are enabled on the ESXi host.

Virtualization Software Requirements.

[Jonathan Schulenberg]

Here’s the TechNote that lays out the process and links to the related tools you need:
https://www.cisco.com/c/en/us/support/docs/servers-unified-computing/ucs-manager/116349-technote-product-00.html