Katana Firmware Update Help : r/SoundBlasterOfficial
Creative Worldwide Support - Sound BlasterX Katana
Boss Katana Amps - FAQ
Katana Version MKII - Firmware Version 2 Update - YouTube
Amazon.com: XSONIC Airstep Kat Edition KATANA MkII & I Footswitch with 5 Footswitches, 2 Control Modes(Change Presets, Toggle Effects), 300H Playtime, Modify Amp sound with BTS App for iOS and Android, Wirelessly :
SoundBlaster X Katana Bluetooth Issues : r/SoundBlasterOfficial