Do not disconnect the device or close the software once the flashing process has started, as this may brick the phone. Troubleshooting & Legacy Limits
Out of the box, the Optimus Black ran Android 2.2 Froyo. It was usable, but buggy. Users reported the infamous "sleep of death"—where the phone would simply refuse to wake up, requiring a battery pull. The Wi-Fi module would drop connections randomly. The culprit? Poorly optimized baseband firmware (the radio software) and an aggressive CPU governor. firmware+change+update+on+lg+p970+optimus+black