Can I have someone update my phone here?

I doubt

I just tried, they said no

Call them

Yes...

Yea i have a verizon unlocked phone. They update it for me all the time

I think so, they're very helpful.

What does "update" mean? They have Samsung and Apple specialist. They do sell upgrades to AT&T, Sprint and Verizon customers. Not sure if that answers your question.