OSC 1.0 and 1.1 only bares any real significance when using a TCP connection. The difference between the 2 versions is that OSC 1.1 uses SLIP encoding when connecting via a TCP connection which is why you can't mix the two versions up. It doesn't matter though if you are using UDP Connection.
to Druuka,
I've bought etc nomad student package as i am the lighting technician my school and i want to use TouchOSC on my iPad I've already installed it and put the layout on and i am use the eos console but i cant get it to connect I've got my own router and I've set it up but eos and OSC won't work together i cant figure out why. please help. thx sascha