This error can stem from four distinct categories. Rushing to blame hardware is a mistake; in 80% of cases, the issue is software or user-configuration related.
If your device has a removable battery, take it out, hold the power button for 30 seconds, reinsert it, and try flashing again. Advanced Troubleshooting: Bypassing Secure Boot sp flash tool error status ext ram exception link
Use a high-quality data cable, not a generic charging cable. This error can stem from four distinct categories