For the Nintendo Switch, it was used to dump some firmware which was then analysed and found to have a buffer exploit (can't remember what sort), which let to t

For the Nintendo Switch, it was used to dump some firmware which was then analysed and found to have a buffer exploit (can't remember what sort), which let to the famous Fusee Gelee exploit on early switches. IIRC it was a security chip which is both ironic and incredibly useful because it couldn't be patched without a hardware revision and it ran before anything loaded from the onboard storage.