Hi yeah uhmm. I bought a samsung galaxy s3 international version from amazon like a couple of months ago and I am unable to update its software. Actually, there is no software update in the "About Phone" section. When I tried updating it with Samsung Kies, it did not detect my phone at all. It cannot even go into download mode. The os version is 4.1.2. It was not rooted at all. It was also a used phone. Help please. I just want to update my phone.