: Fixes the issue where the soundbar would not "remember" your last volume setting after being disconnected from mains power.
| Symptom | Likely cause | Fix | |---------|--------------|-----| | Updater says “Device not found” | Wrong mode | Re-enter update mode (step 4.2) | | Update stuck at 0% | USB cable is charge-only | Use data-capable cable | | Soundbar won’t turn on after update | Interrupted flash | Recovery mode: Hold Bluetooth + Power for 15 sec, then re-run updater | | No sound after update | Input mapping reset | Cycle inputs using Source button | | Bluetooth pairing fails | Firmware reset stored keys | Forget device on source, re-pair |