axiom, i dont know if anyone has tried that one yet but jellofreak tried the full system image from Bin4ry's post which did a similar thing. it flashed the entire r800i build on his r800x without issue. he says there are a few bugs here and there but over all usable.
I was wondering if that would have bricked the radios. good to hear it didnt. I always wanted to try timescape/mediascape.