Yes, that's right. The firmware does not run on the host CPU, it runs on the
chip itself. So it doesn't matter if you run 32 or 64-bit Trisquel.
Since you don't have internet, get the apt-offline deb package from a
computer with internet and install it on your offline computer with:
sudo dpkg -i apt-offline_1.1.1build1_all.deb
Then use apt-offline to install the packages linux-generic-lts-saucy and
open-ath9k-htc-firmware. You will first need to update the cache. See this
article for more information about apt-offline.
