OneKey founder warns older iPhones have unpatchable chip vulnerabilities

Yishi says BootROM flaws in iPhone 11 and earlier models could expose seed phrases to anyone with brief physical access If your crypto seed phrase lives on an aging iPhone, OneKey’s founder thinks you should move it. Soon. On November 1, 2026, Yishi, the founder of OneKey, warned that iPhone 11 series devices and earlier models carry hardware vulnerabilities that no software update can fix. He said these flaws could potentially expose wallet seed phrases to attackers who get their hands on the phone, even briefly. The warning centers on two known exploits.