I believe that guide is for those who have froyo and hboot 1.00 or 1.01. As you have 0.43 you need to use the rooting guide for 0.43.
As an important point for you at this stage do not update your hboot version if you want to get full s-off later. Hboot updates are usually included with higher/newer versions of stock rom so also probably not a good idea to update or even change your stock rom.
sent from my legend, currently using zeubea ics beta0
Update: 8th April 2014
Samsung Galaxy S4 👉😆😄Echoe rom v20😄😆👈
Still on old BMG4 Boobloader + FNBH Baseband.👍
HTC Desire HD
(Hboot 2.00.0029 AND S-OFF)
SVHD V 2.1.0
Retired HTC Legend