Hmmmm ..... now I'm confused .... just downloaded the 'buttonfix3.upgrade'; comparing it to the one that i downloaded a while ago, there doesn't seem to be any difference. So .... let me back up here a moment and say that the last few upgrades have been like b10a -> buttonfix3 -> b11pre -> b11. The IR had been working nicely until b11; which the really noticeable thing is volume up/down fast forward/rewind are not as responsive as I remember earlier versions. Probably just 'yet another moment of cluelessness' on my part.