I installed the latest firmware patch for the Katana MkII [ Ver.2.00 ] JUL 2022 and also the latest Tone Studio SW + joined the Boss Tone Exchange where I managed to download a few more tones to try out.
p.s. Here is rundown by Paul from the Studio Rats of the latest FW and SW update by Boss https://youtu.be/qRDhRwJLHKM.
I tried these tones and wow....My amp has come alive. I wonder if the old FW of my amp was somehow corrupted? Anyway, happy days....