The error message typically occurs on carrier-locked OnePlus devices (particularly T-Mobile variants) when attempting to unlock the bootloader without the required proprietary binary file. Unlike global models, these variants require a specific "unlock token" from OnePlus before the standard unlock commands will work. Why You're Seeing This Error
Unlocking your OnePlus device provides you with a range of benefits, from customization to root access. While flashing your unlock token may seem daunting, it's a relatively straightforward process. By following the steps outlined in this article, you can unlock your device and take control of your software. please flash unlock token first oneplus better