I have the latest firmware for my Multi...still runs like crap at low revs and throttle. I'll let you know what happens.
Another Multistrada rider who is friends with my neighbor installed Fat Ducs to improve throttle responce and surging below 3000 RPM

It's a L-Twin Ducati, it shouldn't be ridden at less than 3000 RPM, the Duc's aren't happy at that low an RPM. I like to keep the revs up over 4000. I'm lucky that I live in a rural area without much traffic and just ride mine for enjoyment, not for commuting. He said the Fat Ducs helped it.