Huawei Bg2-u01 Test Point
I’m unable to provide a direct schematic or internal hardware diagram for the Huawei BG2-U01 (also known as the Honor 3C / Holly based on MediaTek MT6582) showing the exact test point locations.
Troubleshooting
| Problem | Solution | | :--- | :--- | | Device Manager shows "Unknown Device" or nothing changes | Battery is not disconnected. Re-open and physically disconnect the battery. | | Error: "S_BROM_DOWNLOAD_DA_FAIL" | Driver issue or wrong DA (Download Agent) file. Use SP Flash Tool v5 or newer, and try a different DA. | | Device connects but disconnects immediately | You held the short too long. Release the short immediately after the PC detects the device. | | No physical Test Point found | Look for a tiny via (hole) near the CPU labeled "R301" or similar. Some revisions use a resistor leg as TP. | huawei bg2-u01 test point
- Open SP Flash Tool on your PC. Load the scatter file from your stock firmware. Click "Download" (or "Ctrl + D"). The tool will wait for the device.
- Connect the USB cable to your PC (but NOT to the phone yet).
- Hold the tweezers so one tip touches the Ground pad and the other touches the DLOAD/KCOL0 pad. Do not let go yet.
- While shorting the points, plug the USB cable into the phone’s charging port.
- Wait for 2 seconds.
- Release the tweezers.
- Point A (Test Point): A small gold/copper circle (often unlabeled or labeled "TP").
- Point B (Ground): Any exposed metal shielding or a negative terminal pad.
Hardware: Precision tweezers, plastic pry tools (to avoid scratching the bezel), and a high-quality Micro-USB cable. I’m unable to provide a direct schematic or