I have a gen 2 nexus 7, couple years old. Decided to update OS yesterday, been bugging me to do it for a little while. Here are the results 75 sec boot time when plugging usb to PC I now have to pull down menu and tell it I want to transfer files. transfer rate is 1/2 what it was. 500mb video was around 2-3 min now 7-8min disconnects while transferring far more often I don't see much in the way of interface change. Will notify what other changes I notice here.