Guide for Xiaomi Redmi 9C ISP EMMC Pinout

Xiaomi Redmi 9C ISP EMMC Pinout | Test Point

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Guide for Xiaomi Redmi 9C ISP EMMC Pinout | Test Point:

  1. Open the phone’s back cover and disconnect the motherboard from the camera, fingerprint reader, and battery.
  2. Remove the motherboard’s screws, take it out, and keep it in a secure location.
  3. Identify the six eMMC pins on the device: VCC, GND, Dat 0, CLK, and VCCQ. Access them by cutting through a steel cover.
  4. Retrieve the adapter from the UFI box. In the connector mentioned in the previous step, you will find the same pins.
  5. Solder four jumpers between the base and the adapter, specifically for Dat0, CLK, CMD, and GND.
  6. Keep VCC and VCCQ on the USB, enabling the capability to turn them off during the process.

Guide for Xiaomi Redmi 9C ISP EMMC Pinout

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Xiaomi Redmi 9C ISP EMMC Pinout | Test Point: A Comprehensive Guide

Unlocking the full potential of your Xiaomi Redmi 9C involves understanding its internal components and how they can be utilized for various repairs and customizations. One key aspect of this is the ISP (In-System Programming) EMMC (Embedded MultiMediaCard) pinout and test point. This guide aims to provide an in-depth overview of the Xiaomi Redmi 9C ISP EMMC pinout and test point, enabling enthusiasts and technicians to perform advanced hardware-level troubleshooting and repairs.

What is ISP EMMC Pinout?

ISP (In-System Programming) EMMC pinout refers to the specific points on a smartphone’s motherboard that allow direct communication with the EMMC storage chip. This method is crucial for tasks such as:

  • Unbricking: Recovering a device that has become unresponsive due to firmware corruption.
  • Data Recovery: Extracting data from a damaged phone.
  • Firmware Updates: Directly updating or restoring the device firmware.
  • Bypassing FRP: Gaining access to a device locked by Factory Reset Protection.

Importance of the Test Point

The test point on the Xiaomi Redmi 9C motherboard is a critical aspect of hardware troubleshooting. It allows technicians to connect external devices or tools to the phone’s internal circuits, bypassing specific security measures and enabling direct access to the EMMC chip.

Xiaomi Redmi 9C ISP EMMC Pinout Diagram

To utilize the ISP EMMC pinout, you need to locate the precise pins on the Xiaomi Redmi 9C motherboard. Below is a detailed pinout diagram:

(Include a high-resolution diagram of the Xiaomi Redmi 9C motherboard highlighting the ISP EMMC pinout and test points)

Steps to Access the ISP EMMC Pinout

  1. Disassemble the Phone:
    • Power off the Xiaomi Redmi 9C.
    • Remove the SIM tray and back cover.
    • Carefully unscrew and remove the protective shields to expose the motherboard.
  2. Locate the Pinout Points:
    • Refer to the provided diagram.
    • Identify the EMMC chip and the corresponding ISP pinout points.
  3. Prepare Your Tools:
    • You will need a soldering iron, fine wires, a multimeter, and an ISP adapter or box (such as the UFI Box, Octoplus Pro, etc.).
  4. Connect to the ISP Pinout:
    • Carefully solder wires to the identified ISP points.
    • Connect these wires to your ISP adapter.
  5. Perform the Desired Operation:
    • Use your ISP tool to read, write, or repair the EMMC data.


  • Handle with Care: The components on the motherboard are delicate. Handle them with precision to avoid damage.
  • Avoid Short Circuits: Ensure there are no loose connections that could cause short circuits.
  • Use Proper Tools: Utilize ESD-safe tools to prevent static damage to the components.


Understanding and accessing the ISP EMMC pinout and test point of the Xiaomi Redmi 9C opens up a myriad of possibilities for advanced device management and repair. Whether you’re a professional technician or an enthusiast, this knowledge empowers you to perform critical operations that can extend the life and functionality of your device.

For detailed step-by-step tutorials and high-resolution diagrams, refer to our comprehensive guide. If you encounter any issues or need further assistance, feel free to join our community forum for support.


Q: What is the main purpose of the ISP EMMC pinout?

A: The ISP EMMC pinout is used for direct access to the EMMC chip for tasks such as unbricking, data recovery, firmware updates, and bypassing security locks.

Q: Can I perform these tasks without professional help?

A: While it is possible, it is recommended to have a good understanding of smartphone hardware and use proper tools to avoid damaging your device.

Q: Are there risks involved in using the ISP pinout?

A: Yes, improper handling can lead to hardware damage. Always proceed with caution and use ESD-safe tools.

By following this guide, you should be able to effectively utilize the ISP EMMC pinout and test point on your Xiaomi Redmi 9C for various advanced repair and recovery operations.