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    Home » ISP Pinout » Oppo A3x ISP PinOUT EMMC Ways | Test Point
    ISP Pinout

    Oppo A3x ISP PinOUT EMMC Ways | Test Point

    By Mobile RdxJune 11, 2025

    Hello mobile technician👨‍🔧. If you have a Vivo or Oppo A3x that is dead, in a boot loop, or FRP-locked without any access to fastboot or recovery, then you’re in ISP land. This guide addresses the EMMC ISP PinOUT for the Oppo A3x the key to chip-level repairs, firmware dumps, and total data access.

    In this post, I’ll walk you through the ISP PinOUT for the Oppo A3x, what tools you’ll need, connection tips, and common fixes—all based on hands-on experience.

    ⚙️ What is ISP (In-System Programming)?

    In simple terms, ISP allows you to access the EMMC chip without having to remove it. You simply have to identify the appropriate pinout of the board, and you have to utilize a supported EMMC tool such as UFI, Easy JTAG, or Medusa Pro to attach it directly.

    Isp Pinout is useful when:

    • Phone is dead (black screen, no boot, no charging)
    • FRP is locked and you can’t use ADB, fastboot, or OTG bypass
    • You need to dump firmware from a working unit to repair a dead one
    • You’re working on a boot repair or partition restore
    • Phone is detected as “unknown” in PC (EDL not working)

    Oppo A3x ISP EMMC Pinout Image:

    Here’s where things get technical. The Oppo A3x shares a hardware layout with several BBK models, but the actual pin locations can vary slightly. You’ll find the ISP points near the EMMC chip under the metal shield.

     EMMC ISP Pin Labels You Need:
    CMD – Command Line

    CLK – Clock

    DAT0 – Data line 0

    VCC / VCCQ – Power supply for EMMC

    Read More:-  Redmi Note 7 ISP Pinout EMMC Ways

    GND – Ground

    Oppo A3x ISP PinOUT EMMC Ways

    💡 Tip: Use a microscope or a 10x magnifier to identify the points correctly. Don’t rely on diagrams alone—confirm the layout visually.

    When repairing dead boot problems, especially for devices like the Oppo A3x, the Easy JTAG Plus and UFI Box dongles are great for mobile repair. They are important for scenarios where the phone has been incorrectly flashed and does not display the startup logo, and is no longer responding to power.

    Required Tools for ISP Pinout:

    • Make sure your bench is set up with the right tools before jumping in:
    • UFI Box, Easy JTAG, or Medusa Pro
    • 0.1mm – 0.3mm jumper wire
    • Fine tip soldering iron
    • Isopropyl Cleaner (IPA 99%)
    • Soldering flux
    • Multimeter (for checking continuity)

    How to Connect ISP to EMMC Box

    1. Remove the battery from the phone – extremely important to prevent voltage conflicts.
    2. Clean the PC board area using isopropyl alcohol.
    3. Connect jumper wires to CLK, CMD, DAT0, GND, and VCC with care using solder.
    4. Connect the wires to your EMMC tool following the tool’s pinout.
    5. Double-check each wire using a multimeter for any shorts.
    6. Turn on your EMMC tool and scan the chip in software.
    7. ✅ If you have the right connection, you will see EMMC chip information in the tool window.

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