My Lumia is on Windows 10 10166 preview but it's not detected by my computer:

[Pablojouef]

Hi,
Lately I've installed the preview of Windows 10 on my Nokia Lumia 625 and it's been almost two weeks since I installed it. I wanted to come back to Windows 8.1 with the WPRT but the phone is not detected. I've tried to restart the phone but the WPRT still doesn't recognize my device. Need help please !