Xiaomi Redmi Note 9 Lite (codenamed ginkgo) is a popular smartphone with Qualcomm Snapdragon 720G processor, which sometimes requires flashing through EDL (Emergency Download Mode) mode. One of the key points of this process is the activation of the testpoint (Test Point), without which the device will not go into the desired mode. In this article, we will discuss where the Test Point is located on the Redmi Note 9 Lite board, how to close it correctly, and what tools will be needed to do this.
It's important to understand that working with testpoint is a surgery for power users. Wrong actions can lead to a complete motherboard failure or loss of IMEI. If you have never disassembled smartphones and worked with soldering equipment, it's better to contact a service center. However, if you decide to act on your own, our instructions will help to avoid typical mistakes.
In the article you will find:
- 📍 Exact location of Test Point on board with photo and description.
- 🔧 Tools required and preparation for the procedure.
- ⚡ Step-by-step algorithm for closing contacts for entering EDL.
- ⚠️ Possible risks and how to minimize them.
- 📱 Alternative ways to unlock the bootloader without testpoint.
What is Test Point and why is it necessary for Xiaomi Redmi Note 9 Lite?
Test Point (test point) is a special contact on the smartphone motherboard, which, when closed to GND (ground), forcibly transfers the device to EDL mode.
- 🔄 Recovery of a “brick” (defaulting phone) after a failed firmware.
- 🔓 Unlock the bootloader if standard methods don’t work.
- 📥 Firmware via Mi Flash Tool or QFil when the bootloader is damaged.
- 🛠️ Diagnostics of hardware malfunctions (in service centers).
The Redmi Note 9 Lite requires a test point in the following cases:
- 🚫 The phone does not turn on, does not respond to the power button and does not charge.
- 🔒 bootloader is locked and unlocking via Mi Unlock Tool is not possible (for example, due to the error "Couldn't verify device").
- 📉 Fastboot is running a "critical partition flashing is not allowed" error").
Without Test Point, a Qualcomm device won't be forced to switch to EDL, and unlike MediaTek, which requires just holding buttons, physical intervention is required.
⚠️ Warning: Closing the testpoint on the phone on may cause a short circuit and disable the power controller. Always turn off the battery before the procedure!
Where is Test Point on the board Redmi Note 9 Lite: photo and diagram
On the Xiaomi Redmi Note 9 Lite (ginkgo), the testpoint is located on the motherboard next to the battery connector.
- 📍 Marking: two contacts with marking TP or EDL (often without inscriptions, only dots).
- 🔍 Location: Under a metal screen, next to the battery connector (see photo below).
- 🎯 Appearance: Two small copper pads, sometimes lacquered.
The following is a diagram with markings (conditional symbols):
| Fee element | Description | Photo/schematic |
|---|---|---|
| Test Point | Two contact areas closed on GND | 📷 [Image: Two dots to the right of the battery connector] |
| GND (ground) | Any metal contact on the board (such as a screw or screen) | 📷 [Image: Fixing screw circled] |
| Battery connector | Connector for connecting the battery (reference point for search) | 📷 [Image: Red connector with 4 contacts] |
| Metal screen | Protective shield that must be removed to access the point | 📷 [Image: Silver plate] |
Critical! In some revisions of the Redmi Note 9 Lite board, the testpoint can be hidden under a heat pad or varnish, in which case you will need to gently scrape the coating with a needle or scalpel without damaging the track.
How to distinguish the original fee from a fake?
Test Point closing preparation: security tools and measures
Before starting work, prepare the following tools:
- 🔧 Set of screwdrivers (cross-haul) PH00 flat).
- 🧲 Suction or mediator to remove the back cover.
- 🔥 Stolen iron (power) 30-40 W) or thin-tipped tweezers.
- 🧵 Multimeter (to check the circuit before closing).
- 🔌 USB-cable (original, with data transmission support).
- 💻 Computer with Qualcomm drivers and Mi Flash Tool.
Security measures:
- ⚡ Turn off the battery before closing (unplug the connector!).
- 🧤 Use an antistatic bracelet or work on a dielectric surface.
- 🔍 Check the chain with a multimeter: the resistance between Test Point and GND It must be infinite until it is closed.
- 📵 Do not touch other components of the board during the procedure.
Turn off the phone and remove it SIM-map|Remove the back cover and metal screen|Disconnect the battery connector|Check with multimeter the absence of a short circuit|Connect USB-computer-wire-->
If you use a soldering iron, set the temperature to no higher than 300°C so as not to damage the tracks. A short touch (1-2 seconds) is enough to close.
⚠️ Warning: Do not use sharp-edged metal objects (needles, pins) to close, they can pierce the board. EDL-button-box.
How to Close Test Point on Redmi Note 9 Lite
Follow the algorithm in strict order:
- Disassembly of the phone: 🛠️ Remove the back cover, poke it with a mediator (no need to heat the hair dryer - the cover on the clips). 🔧 Unscrew 10 screws that fix the metal screen. 📱 Carefully disconnect the battery connector (use a plastic spatula).
- Search for Test Point: 🔍 Find two contact areas to the right of the battery connector (see photo in the section above). 🧹 If the points are lacquer-covered, clean them with a scalpel or alcohol.
Contact closure:
1. Connect the USB- cable to your computer (but not to your phone!).
2. Close Test Point on GND with tweezers.
3. Holding the circuit, connect the cable to the phone.
4. Wait for the device to appear in Task Manager (COM port).Connection check:
- 💻 In Device Manager should appear Qualcomm device HS-USB QDLoader 9008.
- 🔄 If the port is undecided, repeat the circuit, holding for longer (up to 5 seconds).
⚠️ Note: If after the scaling of the EDL missing IMEI, Restore it with the help of a tool SN Write Tool or contact the service. Self-restore IMEI It may be illegal in some countries.
Alternative ways to enter EDL without Test Point
If you don’t want to disassemble your phone or are afraid of damaging the fee, consider alternative methods:
- 🔌 EDL-button cable: A special cable with a button that connects instead of the standard one USB. When you press the button, the phone automatically switches to EDL. Suitable for Qualcomm models including Redmi Note 9 Lite.
- 📱 Team through ADB: If the phone turns on, but the bootloader is locked, try the command: adb reboot edl For this you need the enabled USB Debugging in the Developer Settings.
- 🔄 Hardware Reset via Recovery: If the problem is in the firmware (not the bootloader), sometimes resetting via Recovery helps: Clip Power + Volume up. Select Wipe Data. → Wipe All Data. Reboot your device.
Pay attention: EDL-The cable may not work on the new revisions of the board Redmi Note 9 Lite (released after 2021), as Xiaomi has tightened protection against unauthorized access.
💡
If the phone is powered on but not stitched through Fastboot, try adb reboot edl first – this is the safest way to go without disassembling.