* Stable firmware version for v2.2 is same as for v3, see GenBoard/UnderDevelopment/FirmWare

* Can I get the firmware with the N2O activation?

You already used it earlier, didn't you?

* Can I get a version for the 3.x boards that stable and does the following

** 60-2 multi-tooth wheel is very standard (I use one myself), but there are limitations for cam sensor placement, see: GenBoard/Manual/InputTriggerCamSync. Therefore most of us uses wasted spark (which is a very good solution).

** N2O activation (WOT detect)

Look for misc... outputs.