Need help unlocking with S-OFF

[0x80h]

(bootloader) version: 0.5
(bootloader) version-bootloader: 0.85.0007
(bootloader) version-baseband: 26.03.02.15_M3
(bootloader) version-cpld: None
(bootloader) version-microp: 0438
(bootloader) version-main: 1.32.405.3
(bootloader) serialno: [REDACTED]
(bootloader) imei: [REDACTED]
(bootloader) product: ace
(bootloader) platform: HBOOT-7230
(bootloader) modelid: PD9810000
(bootloader) cidnum: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 4196mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: dirty-7eafc656
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0

Tried using fastboot to get unlock code from the phone:

C:\Users\user\Downloads\adb>fastboot oem get_identifier_token
...
(bootloader) [ERR] Command error !!!
OKAY [  0.008s]
finished. total time: 0.008s
htc_fastboot finished. total time: 2.582s

What do I do now? I've tried re-installing the original RUU as suggested by HTC but install fails

EDIT:

Problem solved. I downgraded the RUU and used the AAHK2 kit to unlock the bootloader instead of the HTC method.