I have a similar car 2007 2SZFE.
Dear when the battery was disconnected the ECU got reset. it will take a while when car will callibrate the idle RPM and fuel AIR ratio. so nothing to worry about. bear it for few days and it will be gone automatically.
I am also going through similar phase these days.
Also how much did u get the DVD player with working maps? from where, which one and for how much?