The default ubuntu touch image is read-only, the user should upgrade his/her system with system-image-cli[1].
I don't think apt-get upgrade is expected behavior.
[1] http://wiki.ubuntu.com/ImageBasedUpgrades
The default ubuntu touch image is read-only, the user should upgrade his/her system with system- image-cli[ 1].
I don't think apt-get upgrade is expected behavior.
[1] http:// wiki.ubuntu. com/ImageBasedU pgrades