Yeah, the guide says both.
System requirements:
HTC Sync (or ADB drivers)
Desire HD with build number 1.72 or higher (higher than 2.37 cannot be downgraded yet, just wait..)
[Warning] Telus DHDs may lose sound because the 1.32.405.6 is not fully compatible with the sound chip. Just start using a custom ROM, and it will work fine.



