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Corrupted, missing, or incorrect MediaTek USB VCOM drivers.
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 This can be caused by: Driver Conflicts : Improperly installed or outdated VCOM drivers
How to Fix SP Flash Tool Stuck on "Download DA 100%" Experiencing a freeze at "Download DA 100%" while using the SP Flash Tool is a common issue when flashing MediaTek (MTK) Android devices. This specific freeze means the computer successfully sent the Download Agent (DA) to the phone, but the device failed to initialize the next step or communicate back.
Fix SP Flash Tool COM Port Open Error: A Simple Guide - Crawler
Here is a step-by-step troubleshooting guide to fix "Stuck on Download DA 100%". sp flash tool stuck on download da 100
Locate the settings and switch from High Speed to Full Speed .
Before fixing the error, you need to understand the boot stages:
When the tool gets stuck at , it means the tool successfully sent the Download Agent to the phone, but the phone and the computer failed to establish the next level of communication. The tool is waiting indefinitely for a response from the device to start flashing the actual system files. Common Causes of the Error
prevent the tool from maintaining a stable connection once the initial handshake (the DA stage) is complete. Secure Boot Requirements Corrupted, missing, or incorrect MediaTek USB VCOM drivers
: Open the tool, click Disable Auth , and connect your switched-off device.
If it appears as "Unknown Device" or disappears quickly, right-click and manually update the driver to the MediaTek USB VCOM Incorrect Download Agent (DA) : Some newer or secure-boot devices require a specific file rather than the default MTK_AllInOne_DA.bin
Download an (such as MCT MTK Bypass or MCT Dongle tool).
: Once the DA reaches 100%, it executes. If your phone has Secure Boot Protection (SLA/DAA restriction) , the device's bootloader rejects the unauthenticated DA script. Alternatively, if the driver drops the COM port connection during execution, SP Flash Tool sits waiting forever for a response that will never arrive. Step-by-Step Fixes for "Stuck on Download DA 100%" This specific freeze means the computer successfully sent
: Once the tool confirms Protection Disabled , keep the device connected. Open SP Flash Tool , go to Options > Connection , select UART , match the designated COM Port , and max out the baud rate to 921600 . Run your flash again. 2. Update Drivers via USBDK & Fix Port Dropping
Look at the top section for the field and click Choose .
: In the main SP Flash Tool interface, locate the list of partitions and uncheck the