https://devices.ubuntu-touch.io/device/yggdrasil
Use the UBports installer: https://devices.ubuntu-touch.io/installer/. Current version 0.10.0 has dependency problems.
- Turn on the developer mode
- Install fastboottool
- Unlock the phone: fastboot flashing unlock
- Install the new OS
- Relock the phone: fastboot flashing lock
- Blog: https://ubports.com/en/blog
- Beta tests satus: https://github.com/HelloVolla/ubuntu-touch-beta-tests
- UB Volla phone Issue tracker: https://gitlab.com/ubports/porting/reference-device-ports/android9/volla-phone/volla-yggdrasil
- Install instruction: https://www.piggz.co.uk/sites/pgz/blog/volla-manual-install
- Search for threads on the SailfishOS forum