OnePlus 6T can't be detected in fastboot.

[Keeklah]

Hello

The title is pretty self explanatory: I cannot see the phone from the computer when connected in USB.

Developer mode is activated, OEM unlocking too.
When I reboot the device to bootloader, it doesn't seem to be detected. fastboot commands don't see the phone.

Can someone help plz?

[MrT10001]

@Keeklah Things to try:

1 - change your USB cable
2 - try another USB port
3 - get the latest ADB and fastboot drivers (That's why I have Android Studio installed)
4 - update your PC and reboot the PC
5 - clean out the phones USB port

[rocket2nfinity]

Also, if you are using windows, the phone's driver must be installed once when the phone is on, and again when the phone is in fastboot mode.