Windows often blocks these drivers because they are not digitally signed. You can disable this by running bcdedit.exe -set TESTSIGNING ON in an Admin Command Prompt and rebooting.

To fix the driver issue on Oppo and Vivo devices, you typically need to install the official Qualcomm drivers and, in many cases, disable Driver Signature Enforcement on Windows . This specialized "EDL Mode" driver allows your PC to communicate with a bricked or locked phone to flash new firmware. 📥 Official Download Links

Users should prioritize finding the correct Model-Specific Firehose Programmer file and the MSM Download Tool rather than generic