Goomwave 2.01.R Rewrite
Goomwave 0.R Rewrite (OEM Behavior)
12-31 Revision — Official Release
The official firmware has instruction commands that can be referenced here
The 2.X.R release has the following instruction commands:

Instructions for reflashing your Goomwave firmware can be found here
R version firmware written by @KingKirb64/Adewotta. Earlier version firmware written by KingKirb64 and Goomy.
Back version firmware available here!