Yt9213aj Firmware Update Patched -

| Symptom | Cause | Is it fixed? | | :--- | :--- | :--- | | | Corrupted launcher cache | ✅ Yes | | Steering wheel buttons stop working | MCU communication timeout | ✅ Yes | | "Unfortunately, Bluetooth has stopped" | Stack overflow in BT driver | ✅ Yes | | Radio app loses all presets | NAND write cycle bug | ✅ Yes | | Screen flickers when headlights turn on | Inverted CANbus signal | ⚠️ Partial |