Hello Phoung,
Please stick to the driver/firmware version mentioned in the VMware HCL for the respective ESXI releases.
For example, if ESXi 5.5 U1 has:
Driver A.x With Firmware 1.x
Driver B.x With Firmware 2.x
Driver C.x With Firmware 3.x
It is advised to stay on these levels of driver/firmware and not upgrade to a different version .
Moving up to a different version might/might not cause an imminent problem.
However, it is a best practice to stick to the recommended releases.
Suhas
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