desire 526 simunlock failed

[duncan99]

Reading information...
Using Fastboot mode...
Reading common information
(bootloader) kernel: lk
(bootloader) product: htc_a13wlpp
(bootloader) version: 1.0
(bootloader) imei: 990005703508649
(bootloader) version-main: 1.07.603.5
(bootloader) boot-mode: download
(bootloader) version-baseband: 0.10.C113251011@50613
(bootloader) version-bootloader: 1.0.0.0000
(bootloader) mid: 0PM310000
(bootloader) cid: 11111111
Execution time is 23(ms)
all:
Reading secure flag information
... (bootloader) Device security level S-OFF
Execution time is 24(ms)
OKAY
Reading CID information
... (bootloader) cid: 11111111
Execution time is 22(ms)
OKAY
Reading MEID information
... (bootloader) meid: 99000570350864
Execution time is 22(ms)
OKAY
Read information completed.


each time i try to clear simlock i get this error
Sending oem clearsimlocktype
... (bootloader) [ERR] Command error !!!
Execution time is 15(ms)
OKAY
Operation finished


i have unlocked bootloader but i still get the same error
please i need help