There are two types of Flash Drives: attack and recovery. Some additional effects may apply.

Attack Flash Drives

To use Flash Drives, you must have FP (Flash Points). A character’s FP Gauge increases by a small amount every time the character has an Action Turn and increases by a large amount when a character defeats an enemy unit. Every time the Gauge fills completely, the character gains 1 Flash Point, to a maximum of 3 FPs. Different Flash Drives take varying amounts of FP.

Recovery Flash Drive

Be aware, some powerful enemies have Flash Drives too.