Currently only installation via TWRP is possible.
To install the recovery, we transfer the phone to fastboot mode, volume down + power button

On the PC, you need to download the files necessary for installation for this on the command line.


Where ubuntu-touch / stable / meizu.en channel used
The following channels are currently available, the channels are arranged in order of priority from the update from OTA to test builds, where stable operation is not guaranteed at all.
ubuntu-touch / stable / meizu.en
ubuntu-touch / rc / meizu.en
ubuntu-touch / rc-proposed / meizu.en
ubuntu-touch / devel-proposed / meizu.en
1. Download the 4th file corresponding to the assembly you selected by the links in the console.
2. Place the downloaded files in the root of the Memory Card
3. With the help of TWRP Recovery, we do a full reset, including formatting the phone's memory and cache.
4. Through TWRP install Kernel
5. We execute the following commands in the TWRP terminal:

6. Reboot and test.

In order to avoid problems with updates, you need to put your native recovery, transfer the phone to fastboot mode, and on the big brother download the ubuntu recovery and execute in the terminal

OpenStore is a special application store that allows you to install applications that cannot get into a regular application store due to security restrictions. These applications allow you to significantly expand the functionality of the device, but can also break the OS. Therefore, all actions in the applications installed from it can be performed only if you know what you are doing and at your own peril and risk.
Installation
1.DownloadOpenstore
2. Start terminal
3. Execute the pkcon install-local --allow-untrusted openstore.mzanetti_ command<version>_armhf.click
4. PROFIT

Ubuntu Touch Tweak Tool - a utility for deep system configuration. For example, it allows you to switch the mode from the tablet to the desktop and back, remove unwanted lenses, etc.
tweakgeek is another utility for flexible system configuration. Approximately the same functions as the Ubuntu Touch Tweak Tool, but there is a very useful application management! You can clean the cache, application data, prohibit the application to “put to sleep” (which is extremely useful for some applications).
Beru is a book reader.
wifiscanner - Wi-Fi scanner.
RockWork - connect your Ubuntu smartphone to your Pebble watch.
Falcon - the first alternative launcher!
compass - well ... compass.
ubtd - allows you to receive and transfer files via Bluetooth.
Owncloud-Sync is the first native cloud sync application. In this case, ownCloud.