The last software released for AdrenaLinn II was version 2.1.2. The initial release was version 2.0.
To check which software your AdrenaLinn II is running: While holding the UP ARROW button, connect power. The display will show either "212" (the latest version), "2-0" (version 2.0, the initial release) or "P20" (also the initial release).
If you see a version other than the latest v2.1.2, you can upgrade to version 2.1.2 by purchasing a pair of plug-in chips contain the v212 software from our online store for $30.