I purchased 4 of those camera, 3 with English firmware one with Chines.
There is no problem with iVMS-4200 at all.
I am in Canada, and I am using the US version of the software downloaded from HikVision US side, which is fully compatible with Chinese firmware on it.
All functions ( I do record on motion only ) of the camera works perfectly fine, during settings I use " page translator " which guide me to the proper places of the menu.
Both recording and playback are FINE. ( based on 3 weeks of using it )
No extra camera settings are required to be recognized by the software.