Thanks for pointing these things out. Will change them as I see things are erroneous. Lots of stuff I just copy/paste from others or get into moveset descriptions and can mix up inputs. There was a really good thread with all of the new demo sonya combo options floating around here. That being said, can probably save you a lot of time. There are only 2 combos scar mainly did:
Mainscreen BnB:
Opener (b33212, 121, b14), stun grenade, [21 stun grenade f4 stun grenade], f4 (both hits) reload
Or this is valid for any amount of grenades, just skip the [] part. Basically end your last grenade on both hits of f4. However, if you don't want them full screen, just reload immediately after the last stun grenade, instead of the other f4.
The corner combos should be found right now in the double on-screen grenade negative edge section. Would recommend reading through most of that to understand what is going on, but the basic corner combo again is:
Opener, stun grenade, njp, stun grenade, 4, stun grenade, reload, 4, stun grenade, 4 stun grenade, 124.
That should be close and the 2 stun grenades after the njp will NOT come out unless you do the NE tech or the input timing w/o it is really strict. Read through the other thread for the info.