Check your USB cable or ensure the PAC file isn't corrupted. Try using a USB 2.0 port instead of USB 3.0.
Install the latest Spreadtrum/UNISOC drivers on your Windows PC so the tool can recognize your device in "Download Mode." spd latest flash tool by zuber mobile new
This usually means your drivers aren't installed correctly or you aren't holding the correct Boot Key. Reinstall the SPD drivers and try a different USB port. Check your USB cable or ensure the PAC file isn't corrupted
Click on the button (usually represented by a single gear icon). Browse your computer, select the .pac firmware file you downloaded, and click "Open." Wait for the tool to finish loading the file. Step 3: Configure Settings (Optional) Reinstall the SPD drivers and try a different USB port
Flashing firmware is a high-level procedure that carries risks. To ensure a successful "Pass," make sure you have the following ready:
Click the button (the Play icon). The tool is now waiting for the device to be connected. Step 5: Connect Your Device Power off your phone completely.