Is there a way to get the latest updates of Ubuntu Touch features without replacing the entire root directory with a new OTA image? I had some applications installed via terminal using apt-get, as well as a couple of scripts in my root directory, but after turning off Developer Mode and updating, they are wiped – entire root directory is replaced with an updated image. I tried "apt-get upgrade" before using System Settings->Updates, but it didn't update anything. I am not using my phone as a dedicated development device, but I am a power user. Is there (yet) an alternative way for me to receive updated features whilst still keeping my custom tweaks/installations? I don't mind if its a complicated or round-about way, as long as it works.
Will I have to custom-download new images, load them in a virtual-machine, use a script to copy over all my changes, then manually flash that to my Meizu MX4? If so where do I get the image and what virtual machine will work? Or is there a better/easier way?