I am not certain about the amount of data it would take, but if you have a portable device, just go to a Starbucks or free Wifi place, turn off data , turn on wifi and upgrade. So about 2 or 3 bucks for coffee.

I think its about 500MB+

Yep, took 400-500megs for me.

:~$ sudo apt-get update && sudo apt-get dist-upgrade -y
正在读取软件包列表... 完成
E: 无法获得锁 /var/lib/apt/lists/lock - open (11: 资源暂时不可用)
E: 无法对目录 /var/lib/apt/lists/ 加锁

how do I unlock it?

sudo rm -f /var/lib/apt/lists/lock