What changes were made? Like were bugs fixed? New FX? I have an m13 with the 20.1 firmware and I guess there's a 20.4 or something like that out, please chime in
Over the past 10 yrs I've consistently heard the same complaint about almost every Line 6 product.They did a really poor job with the updates on the M series. They could have done A LOT more with it, and there were definitely more bugs that needed fixing. RichRenken fail.