1.2.11 does have wheelspeed. It's Base Setup -> Speed Sensor
FlexFuel sensor is more monitoring than much else. You can set up anytrim based on wheelspeed1 in 1.2.11, so you should be able to trim ignition/boost/pulsewidth, etc.
My opinion, throw the LCD in the garbage or use it for an electronics project. Don't bother with this. If you want a display use the android app or get a round gauge.
There are tons of pics on the wiki of where the LCD header goes. There's a reason you don't see any LCD or mention of it in the US VEMS store. I never recommend it.
Always update ini files from the web. In VemsTune go to Preferences, and it's there in the menu. You should be running VemsTune 2018-01-04 and update ini files every week or so, or whenever you use VemsTune if it's not often.
Not sure what h24 dummy is exactly, it's either been forever since I've seen it, or I haven't. But sometimes you need to enable a feature to set a setting, then disable it again. I always take care of these just so it's clear when I do a validation. I'd imaging not being so picky would work out most of the time though.
