htc frp

well… i tried to remove frp on an htc device. log is:
Searching For Phone… OK
Device Found!
Reading Information…
Write_Err:protocol_version
Write_Err:serial
Write_Err:product
Write_Err:LockState
Please Unlock Phone BootLoader First then Retry!
Operation Time: 00:00:38

genious question is: how am i supposed to unlock bootloader if FRP denies this action??