BMC on Virtual Edge Platform (VEP) 4600

I'm wondering if anyone has used this (either console or network) to do firmware updates on the VEP4600.  I have a few dozen of these things that I need to maintain and I have no physical access to the systems (I need to lean on raised floor teams at remote data centers) so if I could leverage the BMC that's be great.  The only problem is that the documentation is lacking.  It doesn't seem straightforward at all.  I inherited this responsibility and the person who originally deployed the first of these didn't bother to connect either of the BMC ports nor did the software vendor (for the platform that runs on these things) recommend using it.  If anyone could point me to documentation that's effective (or even a link to a YouTube video or blog that explains it) I'd appreciate it.