Just bought an M919(I have the S4 Activate now, sucks) anyhow I am not sure what SW version its going to have(bought on ebay, not here yet) It is new, unlocked. Going to use it on ATT Gophone. Im perfectly fine with stock TW, rooted, debloated. I dont care about warranty. If it has 4.2.2, will I run into any problems updating to 4.3, signal, rooting, or otherwise? And if I do 4.3, or it has it, and I root/debloat, when 4.4(if it does) comes out, I should be able to download to the stock 4.4 from like sammobile or somewhere and Odin to 4.4? I wont be stuck on 4.3 right? Thanks.