Heroic Mode Firestorm Vanguard +Version - 5/7/15
We've received several questions regarding crafting of the +version of the Firestorm Vanguard during Heroic Mode; I'm here to shed some light on it.
If you didn't have a regular version of Firestorm Vanguard maxed out before Heroic Mode, you will be able to level the armor and the +version will be unlocked. If your armor was already maxed out, you will unfortunately need to play Heroic Mode as you would normally.
For those who already have +versions of the armor, you will need to play through Heroic Mode in order to craft another +version.
This issue has been fixed for further updates.
Apologies for the frustration and confusion this has caused.