Can we unlock the HTC Desire HD for free ourselves?
Welcome to AF!
There's a tool called the Ace Hack Kit which does all sorts of things to the DHD, although I'm not sure if it provides a network unlock. You'd be best placed heading to the Desire HD section and they'd put you on the right track: HTC Desire HD - Android Forums
The Support or All Things Root forum will most likely be your best bet.
Hey there and welcome to Android Forums.
Glad to have ya here!
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