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 sp flash tool stuck on download da 100
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. If your SP Flash Tool is stuck on
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?
SP Flash Tool Stuck on Download DA 100: A Comprehensive Guide to Troubleshooting and Resolution
The SP Flash Tool is a popular software utility used for flashing firmware on Android devices, particularly those powered by MediaTek (MTK) chipsets. While it's a reliable tool, users often encounter issues during the flashing process. One of the most common problems is the SP Flash Tool getting stuck on "Download DA 100." This article aims to provide a detailed guide on understanding the issue, its causes, and most importantly, step-by-step solutions to help you overcome this frustrating problem.
Understanding the Issue: SP Flash Tool Stuck on Download DA 100
When using the SP Flash Tool, the flashing process involves several stages. The "Download DA 100" stage is a critical point where the tool attempts to connect to the device and prepare it for firmware flashing. However, if the tool gets stuck at this stage, it can be due to various reasons, ranging from simple connectivity issues to more complex firmware or hardware problems.
Causes of SP Flash Tool Stuck on Download DA 100 Incompatible or Incorrect Firmware : Using firmware that
Before diving into the solutions, it's essential to understand the potential causes of this issue:
Solutions to SP Flash Tool Stuck on Download DA 100
Now that we've identified the potential causes, let's explore the solutions:
If the phone is stuck in a bootloop or has a corrupted bootloader, it may not enter BROM mode correctly. Forcing BROM mode bypasses the preloader entirely.
| Cause Category | Specific Issue | |----------------|----------------| | Driver Issues | Wrong USB VCOM driver, driver signature disabled, or driver conflict. | | USB Problems | Bad cable, USB 3.0 port, loose connection, or power fluctuation. | | Storage Failure | Corrupted eMMC, damaged partitions (especially NVRAM or bootloader). | | Bootloader State | Bootloader is locked or partially bricked (BROM mode disabled). | | Version Mismatch | Using an outdated DA or SP Flash Tool version for your chipset. | | Battery/Voltage | Dead battery, battery too low, or phone refusing to stay in BROM mode. |
Q1: Does " stuck on download da 100%" mean my phone is hard-bricked?
No. It usually means the communication handshake failed, but the phone still enters BROM mode. Hard brick would show no response at all (no red bar). You have a very high chance of recovery.
Q2: Can a dead battery cause this error?
Yes. If the battery voltage is below 3.4V, the phone may enter BROM but shut down when the DA tries to power up the eMMC. Charge the phone for 2 hours using a normal charger, then retry.
Q3: How do I know if it’s a driver issue or a hardware issue?
Open Device Manager. Connect the phone. If you see "Unknown Device" or a device that keeps appearing/disappearing every 5 seconds, it’s a driver or cable issue. If you see "MediaTek USB Port" steady but the error still occurs, it’s a DA/storage issue.
Q4: Should I use "Format All + Download" to fix this?
Absolutely not. That will erase your IMEI (NVRAM) and often makes the DA error worse because the phone can't find critical partition headers. Only use "Download Only" until the error is resolved.
Many users unknowingly select "Firmware Upgrade" which tries to repartition the eMMC and rewrite the preloader—this frequently triggers a DA hang if any partition is corrupted.