Try selecting different DA files from the SP Flash Tool folder.
The default MTK_AllInOne_DA.bin included with SP Flash Tool doesn't work for every phone, especially newer models or those with Secure Boot. In SP Flash Tool, look at the field. Click Choose . sp flash tool stuck at download da 100
If you see "MTK USB Port" or "Preloader USB VCOM" appear and then disappear with a yellow triangle, your drivers are outdated or unsigned. Try selecting different DA files from the SP
Download and install the latest MTK All-in-One Drivers . If you are on Windows 10 or 11, you must Disable Driver Signature Enforcement before installing. 📂 Fix 2: Use the Correct Download Agent (DA) Click Choose
Sometimes the tool is trying to talk to the phone at the wrong "speed."
If your device has a removable battery, take it out, wait 10 seconds, put it back in, and try again without turning the phone on. 💻 Fix 1: Update Your VCOM Drivers