To determine the current firmware, see Determining Network/Storage firmware and driver version in ESXi/ESX 4.x, ESXi 5.x and ESXi 6.x (1027206).
Use the appropriate link below to find the supported versions of firmware for your Emulex adapter and ESXi version.
Emulexhttps://www.broadcom.com/support/download-search
HP Supported Firmware
http://vibsdepot.hpe.com/hpq/recipes/
Dell Supported Firmware
Lenovo Supported Firmware
Lenovo System x and Flex is to point to FixCentral: In the Fix Central Search box type in Emulex firmware VMware to see all available versions by adapter.
http://www-933.ibm.com/support/fixcentral/
Thinkserver link: Drill down by supplying the server model and adapter type.
http://support.lenovo.com/us/en/products?type=Servers&c=1
Fujitsu Supported Firmware
Huawei Supported Firmware
Hitachi Supported Firmware
EMC Supported Firmware
NetApp Supported Firmware
https://www.broadcom.com/support/download-search?pg=&pf=Fibre+Channel+Host+Bus+Adapters&pn=&pa=&po=NetApp&dk=