I was never able to get TWRP or CWM to do anything on my phone -- lack of technical expertise on my part. The main reason I rooted was to be able to move data to my external SIM card and find or move stuff around where I want with simple Linux commands. I'd love to master TWRP or CWM and master sideloading which is misterious to me -- also in part because I have a new Samsung Galaxy S Tab 8.4 that I hate the skin and bloatware on. Hence am slowly dipping my toe into a safe rooting method for that one -- and I'd need to use CWM to flash a different ROM on it. (Since I'm not a dev but what you guys call a noobie, I roughly understand this stuff in very general terms, but not in actual practice and hence need to proceed carefully.)
But first, is there a way to turn off the above OTA nag reminder that will otherwise henceforth pop up every day? I'm not worried about the FakeID exploit (should I be?) and I never use Bluetooth.