Replacement S9 has arrived with this email. Did they really change something on the hardware side? : r/roomba
fix roomba s9+ error 31 or 35 - YouTube
Flagship 'Rumba s9 +' review with origami performance and price that realized 'perfect cleaning' with a design that overturns the image of Rumba - GIGAZINE
Rent iRobot Roomba s9 Vacuum Cleaner Robot from €54.90 per month