Found the solution: adb reboot bootloader Then boot it into recovery and then: ubuntu-device-flash touch --device=mako --server=http://system-image.ubports.com --channel=15.04/stable This ends with: 2018/02/26 21:42:20 error pushing: adb: error: connect failed: no devices/emulators found But after rebooting it it is up and running 15.04 without any problems Sorry for not trying harder before posting above!