Install Ubuntu Mobile (Touch/Install)
Instructions for flashing a phone or tablet device with Ubuntu.The Ubuntu Touch Developer Preview is intended to be used for development and evaluation purposes only.
It is an experimental development snapshot that can potentially brick your device. It does not provide all of the features and services of a retail phone and cannot replace your current handset. This preview is the first release of a very new and unfinished version of Ubuntu and it will evolve quickly.
This process will delete all data from the device. Restoring Android will not restore this data.Contents[list=1]
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Ref:
https://wiki.ubuntu.com/Touch/Install