So if installing mods starts at 3 Difficulty dice (Purple) against a Mechanics check, and each additional mod option increases this difficulty (RAW) by one, how is it possible to roll a Despair and render the Attachment useless? There's no Despair symbols on a Purple die.
I guess if you had a vindictive GM, he/she/they/it could burn a Destiny point to upgrade the check, but that doesn't sound like something any GM I've ever played with would do.
Am I interpreting my reading of this wrong? Am I missing something?