If you are trying to unbrick or flash your MediaTek (MTK) device and the SP Flash Tool is stuck at "Download DA 100%", you are stuck at the most common hurdle in Android flashing.
When the progress bar hits 100% (usually red or purple) and refuses to turn yellow, it means the tool has sent the Download Agent (DA) to the phone, but the phone isn't talking back.
Here is how to break through that 100% stall and get your flash moving. 🛠️ Quick Hardware Checks
Before diving into software settings, ensure the physical connection is solid.
Change the Cable: SP Flash Tool is notoriously picky about USB cables. Use the original "fast charging" cable that came with the device.
Swap USB Ports: Avoid USB 3.0 (blue ports) or USB hubs. Plug directly into a USB 2.0 port on the back of your PC motherboard.
The Battery Trick: If your device has a removable battery, take it out, wait 10 seconds, put it back in, and try again without turning the phone on. 💻 Fix 1: Update Your VCOM Drivers
The "DA 100%" hang is almost always a driver handshake issue. Your PC sees the device, but it hasn't established the MediaTek USB VCOM port correctly. Open Device Manager on your PC.
Connect your phone (powered off) while watching the "Ports (COM & LPT)" section.
If you see "MTK USB Port" or "Preloader USB VCOM" appear and then disappear with a yellow triangle, your drivers are outdated or unsigned. sp flash tool stuck at download da 100
Action: Download and install the latest MTK All-in-One Drivers. If you are on Windows 10 or 11, you must Disable Driver Signature Enforcement before installing. 📂 Fix 2: Use the Correct Download Agent (DA)
The default MTK_AllInOne_DA.bin included with SP Flash Tool doesn't work for every phone, especially newer models or those with Secure Boot. In SP Flash Tool, look at the Download Agent field. Click Choose.
Try selecting different DA files from the SP Flash Tool folder.
Note: If you have a Xiaomi, Oppo, or Vivo device, you likely need a Custom DA file specific to your model to bypass the security check. ⚙️ Fix 3: Match the Connection Settings
Sometimes the tool is trying to talk to the phone at the wrong "speed."
Fixing the "SP Flash Tool Stuck at Download DA 100%" Error Getting stuck at Download DA 100% is a common and frustrating hurdle when using the SP Flash Tool to flash firmware on MediaTek (MTK) devices. This specific hang-up usually indicates a communication breakdown between your PC and the device's bootloader. What is Download DA?
The Download Agent (DA) is a small piece of software sent from the SP Flash Tool to the device's RAM. Its job is to handle the actual flashing process by communicating between the computer and the device’s storage. When it hits 100% but nothing happens, the tool has successfully sent the DA, but the DA cannot "handshake" with the device to start writing data. Step-by-Step Solutions 1. Use an MTK Auth Bypass Tool
Modern MediaTek devices often have a "Secure Boot" feature that blocks unauthorized flashing. If your progress bar is stuck at 100%, it might be waiting for authentication.
The Fix: Use an MTK Auth Bypass Tool (like the LibUsb/MTK Bypass) to disable the secure boot protection before you click "Download" in SP Flash Tool. 2. Verify Your VCOM Drivers If you are trying to unbrick or flash
Incorrect or unstable drivers are the most frequent culprits for communication failures.
Update Drivers: Launch your Device Manager, connect your phone, and ensure it's detected as "MediaTek USB VCOM" or "Preloader USB VCOM" without a yellow exclamation mark.
Manual Install: You may need to manually point the driver update to the Mediatek (VCOM) driver files. 3. Try a Different Boot Key Combination The device must be in the correct mode to accept the DA.
Common Keys: Try holding the Volume Up, Volume Down, or both buttons simultaneously while plugging in the USB cable.
Connection State: Ensure the phone is completely switched off before connecting. 4. Change Your Hardware Setup Sometimes the issue is physical, not software-based. Stuck at Download DA 100% - Hovatek
Here’s a concise troubleshooting post you can use for forums, social media, or a tech blog:
Title: SP Flash Tool Stuck at “Download DA 100” — Quick Fixes
Body: Having trouble with SP Flash Tool hanging at “Download DA 100”? Try these steps in order:
If none of these work, include this info when asking for help: Check USB cable & port
Good luck — provide the details above if you want me to suggest the next steps for your exact device.
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Windows may be using the wrong driver for your device. The correct driver is MediaTek USB Port (or MTK USB Com Port). If Windows uses libusb or a generic MTP driver, the handshake fails.
It is important to differentiate:
Do not skip steps. Follow this checklist in order.
If you are reading this, you have likely been staring at your computer screen for the past 20 minutes, watching a progress bar refuse to budge. You are trying to flash a stock ROM, unbrick a Mediatek (MTK) Android device, or install a custom recovery. You loaded the scatter file, clicked "Download," connected your phone... and then it happened.
The SP Flash Tool log window displays: "Download DA 100%" ... and nothing else.
This is one of the most frustrating errors in the Android modding community. Fortunately, it is also one of the most fixable. This article will explain why this happens and provide ten proven solutions to get you past the 100% barrier.
Many users blindly click "Download". Try this: