[PaulRevere]

As far as I know, doing any updates to the cRIO over 802.11 or 802.3 (Ethernet) won't matter, as the machine that is sending the update is simply sending the data as UDP packets to the cRIO. I've upgraded ours over wifi, over a LAN, and directly connected to our development machine. (On a side note, if you are using a separate developer's machines [NOT the Classmate], that has a Gigabit Ethernet port, then using a standard CAT-5 cable vs. a crossover would make no difference as Gigabit standards require that the Ethernet port itself can make any cable into whatever kind needed. [i.e. a crossover can be used where a standard cable should normally go, and vice versa.])