Hey, so, a few months ago I bought my Galaxy S4 completely new from my local service provider. It has been completely fine up until now, but now it won't search for updates. When I try and check for an update, it just says "Your device has been modified, no updates available.", so, naturally I would go and check to see what the problem is because I have been excited for KitKat 4.4.2 and I would really like to not miss out on it, but now I am not sure that I will be able to get it. I looked this up on the internet, and it just told me to restart my phone without the SD card, but that didn't work either. When I checked my System Status it said "Custom". I am not ROOTed, and my KNOX counter and and warranty void are both at 0x0, although I do not know how to check my binary counter. If you know how this can be fixed (Without ROOTing, please, I would rather not take the chance in losing my warranty too.) I would extremely appreciate any and all advice that you have!