“Yes. And in our case,” Lena pointed at a red line, “the HCI — Host Controller Interface — is corrupted. It’s the translator between the chip’s firmware and the phone’s operating system. Ours keeps mistranslating ‘start streaming’ as ‘reset pairing.’”
Kai frowned. “So one bad layer breaks the whole stack?” bluetooth stack
That night, Lena wrote in her lab notebook: “The Bluetooth stack is fragile because it’s a stack. But it’s also powerful for the same reason. Fix one brick, and the whole tower stands again.” “Yes