Problems to install qemu on Xenial Mate (for EMMC)

[demian]

Hi everybody:
Please excuse-me if my question is too simple. I'm just learning with my pinebook. 
I have changed the original 16gb emmc by a 64gb version. After that, it was necessary to install the Ayufan's Xenial Mate linux distro (https://github.com/ayufan-pine64/linux-b...118.img.xz). It  works fantastic, but it seems that I have repository problems. For example, I was unable to install qemu using the standard procedure (sudo apt-get install qemu-system-arm). I get the following error "Unable to locate  package qemu-system-arm". Moreover, the sudo apt-get update command is unable to go beyond line 46 (http://ppa.launchpad.net/maarten-fonvill...dio/ubuntu Xenial/main translation-en [232 B]). It freeze on 0% [Working].
I'm doing something bad. Could you help me?
Thanks in advance
Demian

[xalius]

What are you planing to do with qemu-system-arm on an ARM board? The package seems to be available though : https://packages.ubuntu.com/xenial/qemu-system-arm

http://ppa.launchpad.net/maarten-fonvill...dio/ubuntu is a third party repo, maybe there is a problem with the files? Did you try removing it from your sources.list ?