I have followed the instructions on how to install ubuntu on a nexus 10 as found here
https://developer.ubuntu.com/en/start/ubuntu-for-devices/installing-ubuntu-for-devices/
but following 'install ubuntu' step 4 - waiting for the reboot, my device shows a cute picture of a microchip and says 'this phone needs restoring from a pc or service center'. There is a progress bar that is moving...
Has this failed, or do I need to wait an very long time for the system to reboot?
What should I do?
thanks