BOSS - BOSS KATANA VERSION 4 SOFTWARE UPDATE AVAILABLE NOW! Attention first-generation Katana owners—a new Version 4 software update for the Katana-50, Katana-100, Katana-100/212, Katana-Head, and Katana Artist is available now! The
Boss Tone Studio Tutorial - Get Connected & Setup (Katana MkII) - YouTube
BOSS Tone Studio Editor for the Katana Guitar Amplifier Series - BOSS U.S. Blog