Huawei Bg2-u01 Test Point May 2026

Once the back cover is off, you will see the motherboard covered by metal shields (EMI shields). You usually need to locate the test point near the primary CPU or memory chip.

⚠️ Without the exact PCB photo, shorting the wrong points can damage the phone.

Before you open the phone, gather these tools: huawei bg2-u01 test point

| Tool | Purpose | | :--- | :--- | | Plastic Spudger/Guitar Pick | To open the back cover without cracking it. | | Fine Tip Tweezers | To short the test point accurately. | | USB Cable (Data Sync) | A power-only cable will not work. | | SP Flash Tool v5.1924+ | The flashing software for MediaTek chips. | | Stock Firmware (BG2-U01) | A full "Download" package (Scatter file + Images). | | MediaTek USB VCOM Drivers | Drivers for Windows 7/10/11. |

⚠️ Warning: Shorting the wrong contacts can damage the motherboard. Follow this guide precisely. Once the back cover is off, you will

| Error | Probable Cause | Solution | | :--- | :--- | :--- | | S_BROM_DOWNLOAD_DA_FAIL (0x7D4) | Wrong driver or USB 3.0 port. | Use a USB 2.0 hub. Install Legacy MediaTek Drivers. | | Phone vibrates but no display (Dead boot) | Preloader corrupted. | Short the test point before battery connection. Keep shorting until SP Flash Tool connects. | | Error: 0xC0050003 (Status_Err) | Battery voltage too low. | Leave the phone on a charger for 2 hours, even if dead. Then retry. | | SP Flash Tool sees phone but stops at 0% | Wrong scatter file or firmware version. | Download the exact firmware for BG2-U01 (Build number: C00B170 or C00B210). Do not use BG2-U10 firmware. |

Once done, a green checkmark will appear. Close SP Flash Tool, unplug the USB cable, reinsert the battery, and press the power button. The phone should boot normally (first boot may take up to 5 minutes). ⚠️ Without the exact PCB photo, shorting the

Pros:

Cons:

Before you start tearing down your phone, ensure you have the following ready:

A: Yes, when done carefully. Accidental shorts to nearby components can damage the phone. Always use a fine-tip tool and avoid touching other chips.