i followed the following topic in order to unlock the bootloader without any success.
When i enter the token into htcdev and then submit it, i got the following message:
Unlocking Bootloader Failed!
Sorry it didn't work out. Here's why:
We're sorry, but it appears your attempt to unlock the bootloader on this device has failed. This could be caused by several factors including simple errors in the entry of the unlock token, problems with your device, or a lack of manufacturer support for the unlocking process. Please see the specific error code listed below, and try again if necessary.
Error Code: Invalid Bootloader Token Length.
Error Reason: The submitted Token appears to be the wrong length and won't work.
<<<< Identifier Token Start >>>>
<<<<< Identifier Token End >>>>>