[aikinai]

Mine doesn’t just blink; it keeps doing this annoying fast vibrate/noise whenever I stop brushing. So I was reading the article really hoping for an easy jailbreak at the end.

[infinityio]

From the sounds of it, three wrong password attempts (from a phone or similar) could accomplish this? That should stop the toothbrush from being able to add extra time to the head

[darkwater]

I would guess that it would probably stop working altogether, if it cannot write in the brush head?

[leokennis]

My Sonicare does this fast vibrate when I need to charge the brush.