I got my phone last August and never really bothered updating the firmware...yesterday I updated it to 2.3.4 and now it won't connect to my router when I'm sitting in the next room. Also, my menu option when I hold the power button to turn on/off 4g is gone (and it isn't connecting to 4g at all). What should I do to fix this? Is there a way to revert to the old firmware? My phone was never rooted...would that help me with this issue? Any help would be appreciated.