Recovering the Xiaomi Redmi 6 Pro after a failed upgrade or system failure often requires drastic measures, and the three-point method (Test Point) is one of the most reliable ways to revive the device. When the smartphone stops responding to commands, does not turn on or goes into an endless bootloom, standard methods like Fastboot or Recovery may not be available, and at this point comes the help of the physical closure of contacts on the motherboard, allowing you to put the processor in emergency boot mode EDL.
This process requires a lot of care and care, because it involves disassembling the case and direct contact with electronic components. The closure of test points is not a software bug, but a hardware function of Qualcomm processors, which is laid down by the engineers for maintenance. If you decide to do this, make sure you understand the risks, but if done correctly, the procedure allows you to bring back to life even the “bricks” that refuse to see the computer in the usual ways.
In this guide, we will discuss in detail the preparation of the toolkit, the process of disassembling Redmi 6 Pro (codenamed sakura) and the algorithm of actions in the MiFlash Pro program. You will learn exactly where the contacts are located to enter the 9008 mode, how to install the necessary drivers and what actions to take if the computer does not recognize the device. USB-cable USB 2.0, because an unstable connection may interrupt the writing of system partitions, which will lead to irreversible consequences.
Tool and software development
Before you start physical intervention, you need to prepare the workplace and the software environment. To successfully run the Xiaomi Redmi 6 Pro through three points, you will need a Windows PC, since Qualcomm drivers and MiFlash utility work correctly in this environment. Lack of necessary software during the disassembled phone stage can lead to oxidation of contacts or damage to the plumes due to prolonged downtime.
You will need to download the current firmware version for the sakura model. It is important to choose the right firmware type: EDL (9008) usually requires a Fastboot firmware with the.tgz extension, which you then need to unpack. Global, EEA or China versions should match your device region or your preferences, but flashing from China to Global via EDL sometimes requires an unlocked bootloader or authorized account.
Install Qualcomm QDLoader 9008 drivers. Without them, the operating system will not be able to identify the phone in deep boot mode. Also make sure you have a thin plastic card or mediator to open the case, as the Redmi 6 Pro has adhesive back cover.
☑️ Firmware readiness
In addition to software, prepare a magnifying glass and good lighting. The circuit board points can be microscopic, and an error in identifying the contacts can short circuit other elements. Use dielectric-coated tweezers or a thin piece of foil to close.
Theoretical Basis of EDL Mode and Point Work
Emergency Download (EDL), often referred to as the 9008 mode, is a low-level Qualcomm processor boot protocol. Unlike the standard Fastboot, which runs through a bootloader, EDL allows you to write data directly to eMMC or UFS memory, bypassing the operating system and bootloader. This makes the method indispensable for removing FRP locks, recovering from failed flashing or treating bricks.
The three-point method on the Xiaomi Redmi 6 Pro involves short-term closure of two specific contacts on the motherboard when power is applied. This action forcibly puts the processor in the waiting mode for commands from the PC. There are two main options for closing: on the phone turned off (with subsequent connection to the USB) or on the phone on (with subsequent resetting into mode).
⚠️ Attention: Closing contacts on the switched-on device carries the risk of short circuits of the power chains. It is recommended to use the method of closing on the completely switched-off device, followed by connecting the cable. USB.
Why three dots? The name "three dots" is often slang. We actually close two test points, and the third point is the ground contact, or the fact that a third wire is connected — USB-On a sakura board, these dots are usually signed as TP1 and TP2 or just highlighted in color.
What is Auth Check on Xiaomi?
Understanding how it works helps avoid panic if the phone doesn't turn on right away. In EDL mode, the screen stays black, and the only indication of work is that a new device appears in Windows Task Manager.
The process of disassembling Xiaomi Redmi 6 Pro
Access to the Redmi motherboard 6 The Pro requires the rear glass cover to be dismantled. The device has no screws on the body, the whole structure is glue-based. First, turn off the smartphone and remove the tray. SIM-Heat the back panel to temperature. 80-90 degrees, using a hair dryer or heating platform to soften the glue.
Use a suction cup to lift the edge of the glass, and carefully guide the plastic map around the perimeter. Don't use metal tools to avoid damaging the glass or internal components. Once you remove the lid, you'll see a battery pack covered by a metal plate and plumes going to the main board.
Unscrew the screws that attach the protective plate and the motherboard itself. Carefully disconnect the plumes of the display, battery and cameras. To work safely with the points, it is recommended to completely disconnect the battery from the board to avoid accidental power surges during manipulation.
- 🔧 Tools: Dryer, sucker, mediator, cross screwdriver, tweezers.
- 🧤 Safety: Work in antistatic gloves or use an antistatic bracelet.
- 🔋 Battery: Turn off the battery plume before any manipulation of the board.
After removing the motherboard (or if the design allows you to reach points without full removal), inspect the area around the processor.The points are often located at the top of the board, next to the display connector or under metal screens that may need to be carefully removed.
Search and close test points (Test Points)
On the Xiaomi Redmi 6 Pro motherboard (model M1805D1SH), the test points for entering the 9008 mode are usually located at the top of the board. Most often, these are two small contacts located next to each other. In some board revisions, one point can be hidden under a protective varnish that needs to be gently scraped off with a scalpel, but on sakura the points are usually open.
Action algorithm: Take tweezers and close two identified dots. USB-cable to the computer. 3-5 Remove tweezers in the Windows Device Manager section "Ports (COM and LPT)» Qualcomm device should appear HS-USB QDLoader 9008.
If the device is defined as «QUSB_BULK» or with a yellow exclamation point, you need to update the driver manually by selecting the qcusbser.sys file from the folder with Qualcomm drivers. If the device doesn’t appear, try changing the polarity of the circuit (although this is rarely a matter for test points, as they are often signal points) or use the method of closing one point onto a metal screen (ground).
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Use a thin wiring with the ends cleaned, bent arc, to close the points, which is more convenient than holding tweezers with trembling hands, and reduces the risk of slipping on neighboring components.
The table below shows the characteristics of ports and modes that may occur in the process:
| Device mode | Identifier in Windows | Action required |
|---|---|---|
| Normal Boot | Xiaomi Android ADB Interface | Standard work, firmware is not needed |
| Fastboot | Android Bootloader Interface | Firmware via Fastboot (without dots) |
| EDL Mode | Qualcomm HS-USB QDLoader 9008 | Ready to Firmware Through MiFlash |
| Charging Only | Unknown Device | Check the cable or closure mode |
Successfully identifying port 9008 is 90% of the success, and now we can move on to the software part of the recovery process.
Firmware of the device through MiFlash Pro
To record firmware in mode EDL It is best to use the MiFlash utility (2018 or later) or Qualcomm. QPST. Run the program on behalf of the administrator. Press the button "Refresh", and the list should show the connected device with the COM-If you can't see the device, check the drivers and port. USB.
Click on Flash or Load Image and select the previously unpacked firmware folder. Make sure there are no Cyrillic characters on the way to the folder. At the bottom of the window, select firmware mode: for full reset and clean installation, select clean all. EDL save user data mode is often unavailable or not recommended when you restore the brick.
Press Flash, which will start the recording process, which can take 200 to 600 seconds, the progress bar will show the status, do not turn off the cable, and do not interrupt the process until the success message appears.
⚠️ Note: If there is an error in the firmware process (e.g., “flash error” or “sahara communication failed”), try changing the firmware. USB-A Sahara error often indicates a problem with the driver or firmware file integrity.
Once successful, the phone will automatically restart, the first run can last up to 10 minutes, and if the screen catches fire and the Redmi or Mi logo appears, then the procedure was successful.
Solving Common Errors and FAQs
Even with strict follow-up, nuances can occur, and users often find themselves in a situation where the computer makes a sound of the device's connection, but nothing appears in the Device Manager, or an "Unknown Device" appears. This is solved by installing driver signatures in Windows or replacing them. USB-hub.
Another common problem is the authorization error when trying to write firmware. This is less common on the Redmi 6 Pro than on newer models, but if MiFlash writes "Error: Flash exception" with code related to auth, try using the older firmware version or XiaomiADBFastbootTools for pre-unblocking if you can.
If the phone goes into a cyclical reboot after firmware, try pressing the volume and power button to log in to Recovery and reset the settings (Wipe Data).
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Success of firmware through three points is 80% dependent on quality USB-cable and correctness of Qualcomm drivers installed, not just from the accuracy of the circuit.