Okay, I feel like I wanna update the firmware. Currently I'm using OS5, so I wanna try OS6. But most people said that OS6 is full of problems. So I need opinion from all of you, should I update to OS6 or just use the OS5? Anyway, what is the latest 0S5 and OS6 version? I want the os that can improve the battery life . No leaked please . :)