Idle too low and jumpy

I had my service about 1000KM ago at the dealer on my SDR 2010.
Replaced liquids, air filer, oil filter, the usual.

Since then the bike's idle has been "jumpy". Meaning that it will rev up and down between 1300-900RPM or so on idle at the stop light or when started. And if I start driving without reving it up a bit more, it would stall. Sometimes when coming to a red light breaking and closing the clutch, it will stall as well (rare but happens usually when it still cold). Even after riding an hour in the heat (and its hot here in the summer), the idle is still low and go up and down.

I returned to the dealer twice. He checked voltage, air leaking, we reset the sensors. Nothing changed. Still idle is jumpy.

I hadn't figure out how to increase the idle myself.
I have read , which seems to be similar.
Is this similar on the SDR 2010 or everything is on the ECU? Will the bike tools be enough to reach there and fix it, and without having to open half the bike?
I don't really want to go back to the dealer and hear the same "its normal, give it time" half-assed answer (sorry for my language).

Cheers.

Is the bike completely stock?
How many miles on it?

Bike only has the akrapovic exhausts from the power-parts (with updated map after installed them 2 years ago).
It has 16,000KM now.

My 2010 SDR has had very similar issues recently, very interested to try out the fix detailed above, hopefully that will cure the problem, let us know if it fixes yours, seems pretty easy to check.