What are you trying to do? (e.g., flashing full stock ROM, rooting, or unlocking bootloader) Which Windows version is your computer running?
stands for Download Agent . The Download Agent is a small piece of code (usually a file named MTK_AllInOne_DA.bin ) that the SP Flash Tool sends to your phone's temporary memory (SRAM) right after connection. The DA's job is to interface with your computer, check the phone’s hardware security, and prepare the storage storage (eMMC or UFS) to receive the new firmware.
Are you currently using a or a custom Authentication (.auth) file? Share public link
This issue indicates that the tool has successfully loaded the into the computer's buffer, but a communication breakdown or security block is preventing the DA from executing on your smartphone. This comprehensive troubleshooting guide covers why this error happens and provides actionable step-by-step methods to bypass it. Why SP Flash Tool Gets Stuck at Download DA 100% sp flash tool stuck on download da 100
Try changing the to a lower speed if the connection is unstable. 5. Hardware Troubleshooting
Check your target phone model's extracted factory firmware folder.
(usually black) instead of USB 3.0 (blue), as the latter often causes timing issues with SP Flash Tool. Version Mismatch What are you trying to do
Getting stuck at "Download DA 100%" (red bar) in SP Flash Tool typically indicates a communication failure between your PC and the Mediatek (MTK) device's Boot ROM . While the Download Agent (DA) has reached the device, the tool is unable to proceed to the next stage, often due to driver conflicts, power issues, or secure boot restrictions. Common Causes for the 100% Hang
: Open the bypass utility and select Disable Auth .
Avoid USB 3.0 (blue) ports; use USB 2.0 instead. The Download Agent is a small piece of
Sometimes the tool settings conflict with the phone's security state.
Open Device Manager , connect the phone, and check if it’s detected as "Mediatek USB VCOM". If it shows as "Unknown," manually update the driver using the Mediatek VCOM Driver Installer . 3. Adjust SP Flash Tool Settings
: Use a tool like USBDeview to uninstall any existing MediaTek or VCOM drivers, then perform a clean manual installation.
: The error stems from driver mismatches, hardware communication breakdown, or active security protocols (Secure Boot) blocking the unauthorized agent.