Dell PowerEdge 2900 Firmware Update

I am attempting to update the firmware on our PowerEdge 2900 server using the following instructions:

www.dell.com/.../SLN296511

And using this ISO from Dell's website: dell.app.box.com/BootablePE2900

However, when I boot to this image and it runs through its process, it tells me my system is not compatible.  It lists out the systems which are compatible, and the 2900 is not on that list.

My great confusion stems from the fact that I downloaded this image directly from the Dell website, using the link they provided for my specific server.  I'm at a loss as to where to look now, so hoping someone can help.

Thanks,

Greg