I upgraded all my ios devices, ipad 2, iphone 4S, ipad mini, and outside of losing "Bad Piggies" game, I don't see any problem. The voice to text works so much better than before. My Son was pointing out that apps open slower, but if that's true you need a pretty good stop watch, 'cause I can't feel it. I'll be using my DL1608 with ios devices for a League of Women Voters panel discussion tonight. Don't know the topic, but they always apply to the current election and show both sides. (Assuming there are actually only two sides.) Like always when I make software changes, I will be bringing a backup mixer. (Alesis Multimix 16 firewire recording mixer that I've had for years.) But at this point, I don't see a reason to not upgrade. (MAKE A SERIOUS BACKUP FIRST! And protect it from being overwritten.) I fully expect Bad Piggies to be back in the near future. (Might just need to re-install it.)