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.
If the phone is stuck in a bootloop or dead, the preloader might be corrupted. sp flash tool stuck at download da 100
Here’s the complete text for the common error: If you are trying to unbrick or flash
The process flow is:
F9).Download then hold the phone's Volume Up or Volume Down button while connecting.Sometimes the tool is trying to talk to the phone at the wrong "speed." Hold Power + Volume Up for 15 seconds