Sp Flash Tool — Stuck On Download Da 100

SP Flash Tool getting stuck at "Download DA 100%" is a common communication error between your PC and the MediaTek (MTK) device. This usually happens when the tool has sent the Download Agent but cannot initiate the next stage of the flashing process. 🛠️ Primary Solutions 🔌 Fix Connection & Drivers

Use a different USB port: Avoid USB 3.0 (blue) ports; use USB 2.0 instead.

Try a different cable: Use the original high-quality data cable.

Reinstall VCOM drivers: Ensure MTK USB VCOM drivers are correctly installed in Device Manager.

Remove battery: If the device has a removable battery, take it out, wait 10 seconds, and reinsert it before connecting. ⚙️ Adjust SP Flash Tool Settings

Run as Administrator: Right-click the flash_tool.exe and select Run as Administrator. Change the Download Agent: Go to the Download tab. Click the Choose button next to "Download Agent".

Select MTK_AllInOne_DA.bin (found in the SP Flash Tool folder). Check Connection Settings: Go to Options > Option... > Connection. Set "USB Speed" to Full Speed. Set "Battery" to With Battery (or "Auto Detect"). 💻 System & Security

Disable Antivirus: Temporarily turn off Windows Defender or third-party antivirus.

Disable Driver Signature Enforcement: Windows 10/11 users may need to disable this to allow VCOM drivers to function properly. ⚠️ Common Hardware Triggers

Faulty USB Port: The physical port on the phone (charging port) might be loose or damaged.

Incompatible Firmware: Ensure the Scatter file matches your exact phone model and CPU (e.g., MT6750 vs MT6755).

Locked Bootloader: Some modern MTK devices require a "Bypass Tool" (libusb/auth bypass) to allow SP Flash Tool to communicate beyond the DA stage.

To help you get past this specific percentage, could you tell me: What is the brand and model of the phone? What version of Windows are you using? Are you trying to format, upgrade, or unbrick the device?

Knowing these details will allow me to provide the specific Download Agent (.bin) or Bypass steps for your chipset.

  • Open Options → Download:
  • Critical: Under "Connection", set to "USB High Speed" (not AUTO).

    • After changing these, save the config, restart the tool, and try again.

    Sometimes the tool settings conflict with the phone's security state.

    1. Disable "DA Checksum" (Most Effective Setting Fix)

    2. Change Download Agent Version

    3. Run as Administrator

    To fix SP Flash Tool when it is stuck at Download DA 100%, you usually need to address either driver conflicts, incorrect Download Agent (DA) files, or hardware connection issues. This specific hang point typically indicates that the tool has sent the Download Agent to the phone, but the phone's processor (BROM) has failed to initialize the handshake to start the actual flashing process. Immediate Solutions

    Forced Connection Mode: While connecting the phone, try holding down the Volume Up or Volume Down button (or both) to force the device into a specific boot mode that allows the handshake to complete. sp flash tool stuck on download da 100

    Update/Reinstall Drivers: Use a tool like USBDeview to uninstall any existing MediaTek or VCOM drivers, then perform a clean manual installation.

    Change the Download Agent: Manually select a different DA file (typically MTK_AllInOne_DA.bin) in the tool’s "Download-Agent" field. Some secure boot devices require a specific custom DA file provided by the manufacturer. Deep Technical Analysis 1. Driver and Software Configuration

    Often, Windows incorrectly identifies the device or fails to switch from the "Preloader" driver to the "VCOM" driver required for data transfer.

    Administrator Privileges: Always run flash_tool.exe as an administrator to ensure it has permission to open COM ports.

    USB Port Selection: Avoid using USB 3.0 (blue) ports or external hubs. Use a direct USB 2.0 port on the PC's motherboard (the back ports on a desktop) for a more stable connection.

    Tool Version: If you are using an older version, download the latest SP Flash Tool version. Conversely, older MTK chipsets (like MT65xx) sometimes perform better on version 3.x. 2. Hardware and Connection Audit Stuck at Download DA 100% - Hovatek

    When SP Flash Tool gets stuck at Download DA 100% (often represented by a solid red bar), it means the tool has successfully loaded the Download Agent (DA) into the device's internal SRAM but is failing to initiate communication with the phone's DRAM or external memory. Common Fixes for the 100% Hang

    Toggle Boot Keys: While the tool is stuck at 100%, try holding different button combinations on your device (e.g., Volume Up, Volume Down, or both) while it's connected.

    Driver Reset: Conflicting drivers can stall the process. Use a tool like USBDeview to uninstall old VCOM and Preloader drivers, then reinstall the latest MediaTek USB VCOM drivers.

    Try Different Tool Versions: Older MediaTek chips (like MT6575/MT6577) often require specific older versions of SP Flash Tool, while newer chips need the latest v5 or v6 releases.

    Run as Administrator: Right-click flash_tool.exe and select Run as Administrator. You might also need to set the Compatibility Mode to Windows XP Service Pack 3 for older versions. Check Hardware Connections:

    Switch to a different USB port (preferably one directly on the motherboard if using a desktop).

    Ensure the battery is inside and sufficiently charged, or try the process without the battery if your device supports it.

    File Selection: Ensure you are using the correct DA_SWSEC.bin or MTK_AllInOne_DA.bin file provided with the firmware or the tool. Common Error Meanings

    List of sp flash tool error codes, meanings & how to fix (solution)

    The "Download DA 100%" freeze in SP Flash Tool typically signals a communication breakdown between your PC and the MediaTek (MTK) device just as the initial handshake completes. Why Your Flash Is Stuck

    Getting stuck at 100% on the red "Download DA" bar often means the tool has successfully sent the Download Agent (DA)

    to the device's internal RAM, but it cannot transition to the actual flashing stage. This is usually due to: Incorrect Download Agent : Using the default MTK_AllInOne_DA.bin for a device that requires a secure or custom DA. Driver Mismatch

    : The PC recognizes the "MediaTek USB VCOM" port but fails to hand over to the "MediaTek Preloader" port. Hardware Connection

    : A faulty USB cable or port that can handle small data bursts (like the DA) but fails during heavy data transfer. Step-by-Step Fixes Switch the Download Agent (DA) SP Flash Tool SP Flash Tool getting stuck at "Download DA

    and manually select a different DA file. For many newer secure-boot devices (like Infinix, Tecno, or Oppo), you must use a custom DA (often named DA_SWSEC.bin or similar) provided with your specific firmware. Toggle "Check LIB DA Match"

    If using a custom DA, you may need to disable a security check. Navigate to Options > Option > Download and uncheck "Check LIB DA match" to allow the tool to proceed with non-default agents. Clean Your VCOM Drivers Conflicting drivers are a major culprit. Use a tool like

    to uninstall all old "MediaTek" or "Preloader" drivers, restart your PC, and then manually reinstall the MTK VCOM Drivers Hardware Connection Check

    : Avoid USB 3.0 (blue) ports; older MTK devices often prefer Battery Status

    : Ensure the phone is completely off. Some devices require the battery to be during the flash, while others require it to be or for you to hold Volume Down while connecting. Try an Older Version

    If you are on the latest v5 or v6, try rolling back to an older stable version like

    for legacy devices, as newer versions sometimes drop support for older chips. Best Practices to Avoid Bricking

    Fix SP Flash Tool COM Port Open Error: A Simple Guide - Crawler

    If your SP Flash Tool is stuck on "Download DA 100%", you are not alone. This is one of the most common errors when flashing MediaTek (MTK) devices.

    It means the computer has successfully sent the Download Agent (DA) to the phone, but the device is failing to communicate back to start the actual flashing process.

    Below is a complete, step-by-step guide to troubleshoot and fix this issue. ⚡ Quick Fixes to Try First

    Before diving into complex settings, try these basic hardware checks:

    Change the USB Cable: Use a high-quality data cable, preferably the original one.

    Change the USB Port: Avoid USB 3.0 (blue ports). Plug into a USB 2.0 port directly on the motherboard (rear of desktop PCs).

    Disconnect and Reconnect: Unplug the phone, remove the battery (if removable) for 10 seconds, put it back, and try again.

    Check Button Combinations: Some MTK phones require holding Volume Down, Volume Up, or Both while plugging in the USB cable to trigger the correct download mode. 🛠️ Method 1: Install Correct MediaTek VCOM Drivers

    A corrupted or missing VCOM driver is the #1 cause of the "Download DA 100%" hang. The tool recognizes the device initially but loses the connection when switching modes. Download the latest MTK VCOM USB Drivers.

    On Windows 10 or 11, you must Disable Driver Signature Enforcement before installing, or the drivers will not work. Open Device Manager on your PC.

    Connect your turned-off phone. Look for MediaTek PreLoader USB VCOM or MTK USB Port.

    If you see a yellow triangle, right-click and update the driver manually. 📂 Method 2: Use the Correct DA and Scatter Files Open Options → Download :

    Using a generic Download Agent (DA) on a secure boot device will cause the tool to freeze at 100%.

    Match the DA file: In SP Flash Tool, click the Choose button next to "Download-Agent".

    Try selecting the default MTK_AllInOne_DA.bin found inside the SP Flash Tool folder.

    If your device has a secured bootloader (like many Xiaomi, Oppo, or Realme MTK phones), you must use a specific custom DA file matching your phone model.

    Ensure your Scatter file matches your exact phone model and stock ROM version. 🔓 Method 3: Bypass MTK Auth (For Modern Devices)

    Newer MediaTek devices have a secure boot system that requires server authentication. SP Flash Tool will hang at 100% DA because it cannot bypass this security.

    Download an MTK Auth Bypass Tool (such as MTK Meta Utility or MCT Bypass).

    Install the required LibUSB 32 filters as prompted by those tools. Open the bypass tool and click Disable Auth.

    Connect your phone while holding the boot keys (usually Volume Up + Volume Down).

    Once the tool says "Protection Disabled", immediately open SP Flash Tool and click Download. ⚙️ Method 4: Change Connection Settings

    Sometimes the tool times out because the connection speed or port is not configured correctly.

    In SP Flash Tool, go to Options > Option (or press Ctrl + O). Navigate to the Connection tab on the left. Change the USB Speed from "High Speed" to Full Speed.

    Set the Battery option to "Without Battery" if your device has a non-removable battery (or try "Auto Detect"). 🛑 Method 5: Run as Administrator & Use Older Versions

    Compatibility issues with newer Windows versions can cause the software to hang. Right-click flash_tool.exe and select Run as Administrator.

    If you are using the latest version of SP Flash Tool (v6.x), try downgrading to a stable v5.x version (like v5.1924), as many older scatter files only work correctly on version 5.

    To help you get the exact files or steps needed to unbrick your device, could you share: What is the exact brand and model of your phone?

    What operation are you trying to do? (e.g., flashing full stock ROM, rooting, or unlocking bootloader) Which Windows version is your computer running?

    Use the version recommended by your ROM provider – mixing old tool with new chip often causes DA hang.

    If the phone’s internal storage is physically failing or has bad blocks, the DA will handshake to 100% but fail to mount the user data area. You need to test the eMMC.