Reboot to fastboot and run:
fastboot flash unlock_token Unlock_token.bin
OnePlus devices (especially newer models) require an official unlock token from OnePlus before you can fully unlock the bootloader. This token is tied to your device’s unique ID. please flash unlock token first oneplus better
If you try to run fastboot oem unlock or fastboot flashing unlock without first obtaining and flashing that token, you’ll see the error. Device detection step: prompt user to connect device;
In short:
You can’t just run the unlock command—you need permission from OnePlus first. Safety warnings:
Users sometimes say “please flash unlock token first oneplus better” to mean:
“Instead of getting stuck, the better way on OnePlus is to flash the token first (or use the MSM Download Tool to restore to stock and then unlock properly).”
So the “better” method might be: