There are five square lock boxes you need a cubic device key to open in Resident Evil 4 When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Those are warded locks, master keys (nothing to do with the Master Lock company) are keys which can open a large group of locks in a specially prepared locking system.

Resident Evil 4 Remake Square Lock Boxes Guide In order to unlock Square Lock Boxes, you will need to find the key called Cubic Device. You can acquire this item by passing through the Armory ...