Patch Cisco Custom Image

Hi,

I've installed a Cisco Custom ESXi 5.5 Image in a UCS C220 M3 and i would like to know if i can install the patches using Update Manager as i do with a default image. I'm not sure if i'll have any problems because some patches update the ESXi drivers and could for example overwrite the Cisco enic and fnic.

I know HP and Dell have their repositories that i can use with Update Manager, but cannot find anything like that for cisco.

Thanks