This is the UA string of the desktop version on armhf:
Mozilla/5.0 (X11; Ubuntu; Linux armv8l; rv:87.0) Gecko/20100101 Firefox/87.0
This is the UA string of the desktop version on armhf:
Mozilla/5.0 (X11; Ubuntu; Linux armv8l; rv:87.0) Gecko/20100101 Firefox/87.0