hi, it didnt work. However a speedcamupdate spud file appears to have been created (though crazily it says it was modified with tomorrows date) when i have put the sd card back into the computer. The text file remained as text.
Not sure if it helps but the database version has the reference in the middle of HMEU2014Q1.
And there is no setting on the actual sat nav to enable speed cams etc.