Common causes include:
Different chipsets require specific DA versions.
Comprehensive Guide: How to Fix SP Flash Tool Stuck on Download DA 100%
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At its core, the "Download DA 100" error indicates a communication breakdown between the SP Flash Tool running on a PC and the MediaTek device in Preloader or BROM mode. The Download Agent is a small piece of code that the tool uploads to the device's internal RAM to manage the actual flashing process. When the tool gets stuck at 100% of the DA download phase, it means the PC has successfully transmitted the DA, but the device has not acknowledged its receipt or executed it properly. This handshake failure can stem from several interrelated factors, the most common being driver conflicts, incorrect timing of the connection sequence, or hardware-level issues such as faulty USB cables or unstable power delivery.
If the drivers are installed, the issue is often that the phone is connecting and disconnecting too fast for the tool to catch it.
If the software fixes fail, the physical link is often the issue. At its core, the "Download DA 100" error
Download and install the official package manually.
Resolving this issue demands a systematic approach. The first step is always to ensure the correct drivers are installed, often by using the "LibUSB" filter driver via Zadig or installing the official MediaTek USB VCOM drivers. Next, one should test different USB ports (preferably USB 2.0), a high-quality data cable, and bypass any USB hubs. Changing the SP Flash Tool’s options—such as switching to "USB Checksum" off or toggling "DA DLL Load" settings—can also help. For persistent cases, using an older or alternative version of the SP Flash Tool (e.g., v5.1924 instead of the latest build) or performing the flash on a different PC (or a virtual machine with a clean Windows installation) may overcome the obstacle. Ultimately, when none of these software measures work, the issue may point to a hardware fault on the device’s motherboard, such as damaged eMMC memory or a faulty PMIC, which requires professional reballing or replacement.
Switch to a different (preferably one directly on the motherboard if using a desktop). This handshake failure can stem from several interrelated
SP Flash Tool getting stuck at is a common communication error between your PC and the MediaTek (MTK) device. This usually happens when the tool has sent the Download Agent but cannot initiate the next stage of the flashing process. 🛠️ Primary Solutions 🔌 Fix Connection & Drivers
The default MTK_AllInOne_DA.bin included in the SP Flash Tool folder does not work for all devices, especially newer models with secure bootloader configurations.
and then stop is a frustrating but common bottleneck. This state usually signifies that the "Download Agent" (DA)—the small piece of software that communicates with your device's internal storage—has successfully loaded into the phone's SRAM, but the tool is failing to transition to the actual firmware flashing stage. Stack Overflow Why the Tool Gets Stuck at 100%
Avoid USB 3.0 (blue) ports; SP Flash Tool often prefers USB 2.0 ports .
The (Download Agent) stage is a critical handshake between SP Flash Tool and your MediaTek-powered device. When it gets stuck, the tool has successfully sent the DA to the phone’s RAM, but the phone isn’t responding or executing it properly.