Did you install chinese recovery from first post or only tried to root?
Install chinese recovery from first post, then install english recovery with root included (choose second opton in chinese recovery, it's "install zip from sdcard" if I remember correctly):
When you have english CWM, install CM12.1 by alexeei:
And install gapps, choose correct version here:
Apply boot.img from B17 through adb and touch control will work fine
Download original B17 soft and install in stock recovery
Probably this is B17 software, but I don't remember (anyway - I've used boot.img from this rom to restore my touch control):