If the checklist didn't work, proceed systematically.
Try connecting the phone using different physical boot combinations: Simply plug the cable into the switched-off phone. Volume Up only: Hold Volume Up, then plug in the cable. Volume Down only: Hold Volume Down, then plug in the cable.
When the tool gets stuck at 100% on this step, it means the agent was successfully uploaded, but the tool cannot move on to the next step—usually the or firmware download —because the device has disconnected or isn't communicating properly. Common Reasons for This Issue sp flash tool stuck at download da 100
. This is often due to a communication breakdown between your PC and the MediaTek hardware. Common Solutions Use an Auth Bypass Tool
To understand the solution, it helps to know what "DA" means. In simple terms, the DA (Download Agent) is a small, temporary program that SP Flash Tool sends to your phone's processor as soon as it establishes a connection. If the checklist didn't work, proceed systematically
If using a desktop, use the rear USB ports, as they connect directly to the motherboard.
If you are using an older device, try an older, more stable version (e.g., v5.x). 5. Proper Connection Sequence (Key Press Method) Volume Down only: Hold Volume Down, then plug in the cable
Attempt the connection while holding down the , Volume Down , or both buttons to force the correct boot mode.
Connect the device and look for a yellow warning sign under or USB Controllers .
Extra checks can conflict with the DA.