How to reset BQ Ubuntu phone when GUI is inaccessible?

I'm starting to mess around with the bq phone. Installing packages with apt and stuff like that. Is there a way to reset the phone when I mess things completely?

I'm looking for a way to do it when I break things so badly that I can't access the "reset" functionality in the GUI anymore.

Warning: This will ERASE all your data

1. Switch off the phone
2. Press and hold the Volume Up + Power button simultaneously for around 10 seconds.
3. Release the Power button when the red LED lights.
4. Afterwards press the Power button to enter Recovery Mode.
5. Press Volume Down, choose wipe data/factory reset and then push the Volume Up button.
6. Select Yes--delete all user data. Use Volume Down to scroll and Volume Up to select.
7. When Recovery Mode menu appears again select reboot system now to restart the phone.

If all goes well, you will have the phone as when you bought it. Without data nor settings

Thanks to John McAleely by its contributions to this answer.