Please dont take this wrong or as an insult but if that answer above isnt enough info, you may be in over your head. Please research thoroughly if "flash a 965U firmware with odin" isnt all the info you need. That answer is all the info except direct links.
All Canadian Pixels are unlocked. I've used mine in Europe (Ireland) and it worked with no hastle or setup required. Put in foreign SIM and go. Enjoy those data rates over there. 20 Euro top up gets you free unlimited LTE data. Pisses me off every time I come back to Canada and pay the ****...
The little Pixel has a problem with the update. Google is looking into it according to a report yesterday I read. I dont believe its generic or carrier specific, just a problem with the 5 inch model.
I RMA'd a phone a month ago because of the burned in nav bar. It is most noticable when the phone is booting on a white screen, but can be seen on any full screen view. A month in, the replacement is doing it as well. Statistically 2/2 is not good.
I have this problem as well over the last month. I think its from the plastic inside th C-Port stretching as none of my cables are holding tight. Luckily for me, I have screen burn and have to send my phone in for replacements and can get this fixed as well.