On the Subject of Dossier Modifier
It's a manila folder. They've been around since 1898. And I've made a module based around it. I don't know why.
Open the dossier menu (the folder labeled "MENU" on the desk) and press the button labeled 'Solve "Dossier Modifier"'.
If there are multiple Dossier Modifier modules on your bomb, the button will solve all of them.