Re: How To Do The Master Code & Rainbow Guardian Boss - Trials Of Gnomus
Check out the posts by member SilverConvoy in this thread:
https://answers.ea.com/t5/Game-Information/Trials-of-gnomus-master-code/td-p/7937328
Try pressing the plates in the order they describe. One of the posts has a diagram so you can be sure you're reading it correctly.
