I found this page [1] which details the setup of the system-image server suitable for OTA upgrades. I believe the ubuntu-device-flash utility also uses the same set of files to install a new phone/tablet from scratch.
However it is very unclear how to prepare the files from a fresh build (`lunch` followed by `make`) ready for the system-image server utilities to build into delta and full flashable images. I want to provide system-image server ota updates and files suitable for ubuntu-device-flash to use for ease of installing my port to reinstate support for the galaxy-nexus/maguro, but the complete lack of information on how to prepare files for ubuntu-device-flash from a freshly compiled source-tree is holding me back. All the instructions for porters say to use rootstock-ng for installing a newly minted port to test, yet the instructions for users say to use ubuntu-device-flash to install "an image" onto their devices. This is obviously a major disconnect that needs rectifying with a set of instructions for porters explaining how to take files output by the build and turn them into a format installable by the recommended ubuntu-device-flash. Without this information many ports are saying "use rootstock-ng to install this port onto your device" which I believe is probably preventing some would-be new users from getting ubuntu-touch onto their phone/tablet. -- There was an email several months ago specifically about the dropping of support for the galaxy nexus which requested that somebody write up details on how the images were built by canonical backend systems. This document still hasn't to my knowledge been written and is sorely needed per my above request. [1] https://wiki.ubuntu.com/ImageBasedUpgrades/ServerSetup -- Daniel Llewellyn
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