So im right now trying to update my os to 503 and everytime in the beginning it gives me a message to restart my phone and as I try and restart it occurs over and over and then I am not allowed to update. After 3 tries my patience is wearing thin, does anyone have this problem with their 9900's or is it just me, does anyone have a simpler way and apploader is not even allowing me at all, it just restarts right in the beginning.