The mentioning of Valetudo should be more at the top to make people aware of the existing alternatives.
My aged Roborock S5 suddenly stopped working a year ago and only cleaned a very small segment making it effectively useless. Since I knew that data is exchanged with the manufacturer I suspected them to actively prevent the device from working properly to make me buy a new one. Thanks to Valetudo the device is working back again just fine. Meaning there never was a hardware (or software) failure, but a remote issue.
Same here. University told me the lowest bit is on the right, the highest on the left. Never questioned it.