I found this document from HasselbladDigitalForum.com and I may want to use it later.

Not the actuation reset(cannot be done) but the file name counter reset by this document.

Hasselblad Digital Back File Counter Reset

(The above original link is no longer working…)

Hasselblad Digital Forum -> Main Board -> Tips and Tricks

https://www.hasselbladdigitalforum.com/index.php/board,9.0.html

H3DII-39, How I can change the raw-name:

https://www.hasselbladdigitalforum.com/index.php/topic,822.msg4291.html#msg4291

November 26, 2009, 09:36:28 AMLast Edit: September 16, 2010, 09:35:16 AM by HLArt

Here is the how to do: “Go in the back menue to the point “settings” then push the button “Info” and the button “arrow to right”, to the same time, or in succession, in the next menue the menue spring automaticliy, scroll down, you will find there a new entire down the last place, that called “service”, enter there and scroll down to the point “reset lifecounter”. It set the counter to “0”. I take my CF-card into the laptop and type with texteditor the number I want to have as next in my conter and then I put it into my Cam, to do the next shot. And you`ll see its no wonder, the right figure you will see on your backscreen.
Kr Hörbi