Do it again /* installing arch linux on my chromebook */

Yesterday, I found setting server manually than geo based server selection will fix the problem that some packages didn't installed because mirror server was unreachable.
So I decided to do it again from start.

I already downloaded install.sh at /home/root so process is simpler

1. become the root
   $ sudo su -
2. $ cd /home/root
3. run install.sh (it's already there)
   $ sh install.sh /dev/sda
4. after installed arch linux to usb,
   $ reboot + ctrl+U
5. login as a root
6. change the mirror server for pacman
   $ nano /etc/pacman.d/mirrorlist
7. connect to wifi
   wifi-menu mlan0
8. check network status
   $ ping -c 3 www.google.com
9. install wget
   $ pacman -S wget
10. download post-install.sh
    $ wget https://raw2.github.com/omgmog/archarm-usb-hp-chromebook-11/master/post-install.sh
11. run post-install.sh
    $ sh post-intall.sh

I thought it should work but it didn't. Again I encountered server unreachable problem for some packages.
I tried servers located in Canada and Singapore but both wasn't success.