Exclamation Problem unlocking bootloader, please help me!

Hi.

I recently acquired a Sensation and have been attempting to unlock the bootloader. I followed every step on HTCDev succesfully but now I am stuck on Step 9. Once I attempt to send my unlock code to my phone, it does nothing past 0 KB.
Few information in case it might help:

On boot menu my phone says:
**LOCKED**, Hboot 1.29. S-OFF
Fastboot also recognize my device (checked with fastboot devices command).

I know of the other way to unlock bootloader but honestly it's way too complicated and don't have the cable needed.

I would absolutely love some help.