fastboot oem get_identifier_token FAILED (remote: unknown command)

hi

please help

i tried htcdev to unlock no luck

fastboot oem get_identifier_token
...
FAILED (remote: unknown command)
finished. total time: -0.000s


**************
fastboot flash recovery recovery_cwm_hboot1.03.img
sending 'recovery' (6992 KB)...
OKAY [ 0.219s]
writing 'recovery'...
FAILED (remote:
Security deny - Err:0x2017
)
finished. total time: 0.234s


my phone stuck in recovery mode please help :) HTC Desire 500