Download attached MegaCLi zip file:
Extract the vib file from the zip and upload to the server.
Install using the following:
esxcli software vib install -v=/tmp/vmware-esx-MegaCli-8.07.07.vib --force --maintenance-mode --no-sig-check
You will need to reboot the system to complete the installation.
Common MegaCli commands can be found here.
https://siliconmechanics.zendesk.com/hc/en-us/articles/208795666