From the HN headline, "I can’t upgrade the firmware of my toothbrush because I once did jailbreak" I thought he had done a jailbrake on his toothbrush, which, honestly, I was much more interested in hearing about.
Turns out he needs to use his phone to update his toothbrush, and being such a security sensitive device as a toothbrush is, Philips won't allow that update to be done on jailbroken devices.
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From the HN headline, "I can’t upgrade the firmware of my toothbrush because I once did jailbreak" I thought he had done a jailbrake on his toothbrush, which, honestly, I was much more interested in hearing about.
Turns out he needs to use his phone to update his toothbrush, and being such a security sensitive device as a toothbrush is, Philips won't allow that update to be done on jailbroken devices.