It's my first time updating an android phone. To be specific, I have a Samsung Galaxy S4 manufactured by DoCoMo which I'd like to update from 4.2.2 to 5.x (Lollipop).
Here's a screenshot of my device information: i.imgur.com/xawKmqB.jpg
I've seen a firmware named Samsung Galaxy S4 Canada SGH-I337M (mrcrab.net/view-stockrom/sgh-i337m.html), but I am not sure if this is the firmware for my phone. Is it? I'm not sure which firmware to use. And also, is there any way to confirm my device name?