stuck

I'll preface this by saying that I've never done this before, and I have no clue about the lingo. I got a tattered 3g to play with if I can fix the disabled issue. That I definitely fixed, but then the next problem was that it is carrier locked (i have no idea which carrier, but it's not mine)...

Hello, i hope someone can help me. I am new to iPhone and don't really know to much about it. I have purchased a used iPhone 6 128GB. I have connected it to a PC and itunes wanted to update it. I agreed to update and restore. This has started a few hours ago and the iPhone is still stuck on...