Hi Dane -
Yep, it's a tad confusing. There are two flash partitions on the device as you can see. From the factory we load switch on primary, router on secondary.
I'd recommend only loading software to partition, so if you need to revert to your old software, you can.
You can run router or switch. Personally, I only run router code on everything. If you decide to run switch, you just won't be able to do things like create ve interfaces for your vlans (inter vlan routing, which based on our chat during the live stream today, you'll want). So run router code.
There isn't an upgrade path. You just need the boot and image files and then you can load them. You don't have to load anything to get you from 8061 to 8090, it's a direct upgrade. Once you load up the UFI image, you'll have to load it a second time.
I was planning to show you how to do this next Thursday on the live stream, if you can wait that long.
Let me know