I have a Nexus S right now - rooted, still running CM9.1 There's a bit of stuff in the 4 and the new JB that I don't want. (from reading) Can the phone be rooted and take an earlier ROM? My big problem with the S - it takes Audubon Birds and a few other apps forever to open. They all have large databases. All of the files are on the phone! I want a faster processor. There is NOTHING else running - except the normal background apps. No social media searching - Wifi off unless home. Usually in range of a cell tower. Turn GPS off, too. I don't want social, location. shopping, you name it. I want speed for my chosen apps. I can put CM10 on the S - I see the stable version is there, but do I want it? Would it help to test on how the 4 would work?