Hello Linux Geeksters. As you may know, Canonical has released a stable Ubuntu Touch image, based on Ubuntu 14.04 Trusty Tahr.
Since the image is available for download, or through the normal OTA updates, the easiest way to upgrade to Ubuntu Touch, based on Ubuntu 14.04 is to plugin your Ubuntu Touch device to your computer, open a terminal and do:
$ adb shell system-image-cli -c trusty -b 0 -v
The next updates will include improvements for Mir, autopilot and qtubuntu, so try to keep your Ubuntu Touch up to date.
Also worth mentioning: Canonical has confirmed at the Ubuntu Developer Summit (UDS) that Ubuntu Touch (based on Ubuntu 14.04) will receive some battery improvements, a dedicated GPS application, a new encryption manager, updates for the Ubuntu Touch Core Apps application pack.
Canonical will also create an Ubuntu Touch installer, for Windows and Mac OS X systems.
For those who don’t know, Ubuntu Touch is officially supported only on the Google Nexus smartphones and tablets, despite the fact that it has been experimenally ported on OPPO Find 5, Pantech Vega Iron, Xperia Tablet Z and many other phones/tablets. The first stable version of Ubuntu Touch, based on Ubuntu 13.10, has been officially optimized to work on LG Nexus 4, but it is not mature enough to compete with Android yet. After the latest Mir update, Ubuntu Touch can be successfully installed on all the existing Google Nexus devices: LG Nexus 4, Samsung Galaxy Nexus, Nexus 7 and Nexus 10, except Nexus 5.