Sp Flash Tool Stuck On Download !exclusive! Da: 100
SP Flash Tool Stuck on "Download DA 100%" - A Troubleshooting Guide
If your SP Flash Tool is stuck on "Download DA 100%" while trying to flash your device, don't worry, this guide will help you troubleshoot and possibly fix the issue.
Solution 10: Replace Preloader via JTAG / Hardware Programmer (Last Resort)
If none of the above works, the preloader region of the eMMC is likely corrupt beyond BROM's ability to bypass. In this state, the phone won't even accept the DA.
You will need:
- An eMMC programmer (e.g., Easy JTAG, Medusa Pro, or Octoplus Box).
- To desolder the eMMC chip or attach clips.
Once connected, write a known-good preloader binary (extracted from your stock ROM) directly to the eMMC at offset 0x0. After rewriting the preloader, the phone will re-enter BROM mode normally, and SP Flash Tool will sail past 100% DA.
This is an advanced repair method for technicians only.
Use Alternative Tools
- MTK Client (Python-based) – bypasses DA for many bricks.
- SP Flash Tool for Linux – sometimes works when Windows fails due to driver issues.
Step-by-step troubleshooting (detailed)
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Prepare:
- Download SP Flash Tool version known to work for your device.
- Extract the firmware package and ensure scatter file and DA are present.
- Install MediaTek VCOM drivers (signed/unsigned method depending on Windows version). Reboot.
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Configure SP Flash Tool:
- Launch SP Flash Tool as Administrator.
- Load the scatter file (Firmware → Scatter-loading).
- Ensure the correct DA is set (in Options → Download Agent) if required; otherwise the scatter loading may set it automatically.
- Select the appropriate download option: “Download Only” (safe), “Firmware Upgrade” (tries to update/repair partitions), or “Format All + Download” (last resort).
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Connect device properly:
- Power off the device completely.
- If the device requires entering a special mode, follow device-specific method (e.g., hold Volume Down while connecting).
- Connect USB cable firmly; SP Flash Tool should detect the device and progress past DA stage.
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If it gets stuck on “Download DA 100”:
- Unplug and re-plug USB, try different ports/cable.
- Reinstall drivers and reboot PC.
- Try the tool on a different PC.
- Replace the DA file with one from the firmware package or a DA specific to your MediaTek SoC.
- Try toggling “DA DL All with Checksum” or disabling checksum in Options (some combinations help).
- Use the “preloader” option carefully: if scatter includes preloader, uncheck it to avoid bricking if you’re unsure.
- Try using a low-level tool (like MTK USB Preloader drivers with test point method) only if experienced.
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Advanced steps:
- Use test-point method to force device into preloader mode (requires opening the phone and shorting specific points) — hardware-level and risky; follow device-specific guides.
- If DA still doesn’t load, device’s boot ROM may be restricted or hardware damaged; seek professional board repair (JTAG/eMMC reflash).
Phase 3: SP Flash Tool Settings
Sometimes the tool settings conflict with the phone's security state.
1. Disable "DA Checksum" (Most Effective Setting Fix)
- In SP Flash Tool, go to the Options menu (usually top right).
- Go to the Connection tab.
- Uncheck "UART".
- Check "USB".
- Go to the Download tab.
- Find "DA Checksum Algorithm".
- Change it from "Default" to "ECC" (or uncheck the box entirely if your version allows).
- Try flashing again.
2. Change Download Agent Version
- If you are using a very old version of SP Flash Tool with a new phone, or vice versa, it will freeze at DA 100%.
- Try downloading SP Flash Tool v5.1528 or v5.1816—these are very stable versions that work with most MTK devices.
- Ensure the Scatter file matches your specific device model exactly.
3. Run as Administrator
- Right-click SP Flash Tool and select Run as Administrator. This ensures the tool has permission to write to the USB ports.
Smart Phone Flash Tool (SP Flash Tool) becomes stuck at "Download DA 100%," it signifies a critical communication breakdown between the computer and the MediaTek (MTK) device. While the progress bar indicates that the Download Agent (DA) has been successfully sent to the device's internal memory, the software is unable to proceed to the next phase—usually the flashing of actual firmware partitions like the preloader or system. Resolving this issue requires a systematic approach to identifying whether the bottleneck is hardware, driver, or software-related. Root Causes of the "DA 100%" Stall
The primary reason for this stall is that the flash tool is waiting for a response from the device that never arrives. This can be caused by: Driver Conflicts : Improperly installed or outdated VCOM drivers sp flash tool stuck on download da 100
prevent the tool from maintaining a stable connection once the initial handshake (the DA stage) is complete. Secure Boot Requirements
: Newer devices often require a specific "Secure Boot" Download Agent or an authentication file (auth file) to authorize the flashing process. Physical Connectivity
: A faulty USB cable, a damaged port, or insufficient power from a USB hub can cause the communication to drop immediately after the DA is sent. Hardware Mismatch
: A mismatch between the firmware's scatter file and the physical hardware of the phone can cause the tool to hang as it fails to verify the target device's internal layout. Strategic Solutions
To overcome this error, users should apply the following troubleshooting steps in order of complexity: Check Hardware Connections
Switch to a high-quality original USB cable and connect directly to a rear USB port on the PC motherboard rather than a front-panel port or hub.
Ensure the device is powered off completely. If the battery is removable, take it out and reinsert it before reconnecting. Verify and Update Drivers Reinstall the MediaTek USB VCOM drivers
and check the Windows Device Manager to ensure the device is recognized as "MediaTek Preloader" or "MTK USB Port" without any warning symbols. Software Adjustments Version Compatibility : Try using a different version of the SP Flash Tool SP Flash Tool Stuck on "Download DA 100%"
. Sometimes an older version (like v3.x) is required for legacy devices, while newer chips need v5.x or v6.x. DA File Selection : Manually select a compatible Download Agent (often MTK_AllInOne_DA.bin
) from the tool’s folder. If the device has a secured bootloader, a custom DA file specific to that model may be necessary. Device Key Combinations
Some MTK devices require specific keys to be held during connection to trigger the correct flashing mode. Common combinations include holding Volume Down , or both while plugging in the USB cable.
By methodically addressing these potential points of failure, users can typically bypass the "Download DA 100%" stall and successfully restore or update their device firmware. technical guide
for a specific phone model, or should we look for a download link for a specific version of the SP Flash Tool? Working with SP Flash Tool - GeeksforGeeks
The SP Flash Tool getting stuck on "Download DA 100%" can be frustrating. Here are some steps and a feature you can use to potentially resolve the issue or make the process more useful:
Example log interpretation
- “DA: Loading DA…” then “Download DA 100” and no progress: DA was sent but device didn’t respond to next commands — likely driver/DA mismatch or device not in correct mode.
- “COMx” appears then disappears repeatedly: unstable USB connection or drivers.
- “BROM ERROR: S_NOT_ENOUGH_MEMORY” or similar: wrong DA or incompatible scatter/firmware.
Advanced Solutions:
- Format the Device: If the tool is stuck at 0% or 100%, try formatting the device before flashing.
- Modify the Scatter File: In some cases, editing the scatter file can resolve issues related to incorrect memory allocation.
Prevention and safety notes
- Always backup user data before flashing. Flashing can wipe data or permanently brick the device.
- Use firmware and DA files matching the exact model and SoC revision.
- Avoid “Format All + Download” unless instructed by a reliable guide.
- If device uses secure boot, unlocking or flashing unofficial firmware may be blocked and could void warranty.
To disable Fast Boot:
- Control Panel → Power Options → "Choose what the power buttons do".
- Click "Change settings that are currently unavailable".
- Uncheck "Turn on fast startup (recommended)".
- Restart your PC.
Also, go to Device Manager → Universal Serial Bus controllers → Right-click each USB Root Hub → Properties → Power Management → Uncheck "Allow the computer to turn off this device".
