I'm build a circuit with a pic18F4550, I'm trying to power up 8 leds, but I get no output voltage from any output pin.

I suspect the pic might be broken because while building the circuit I made two mistakes:
- I wired the 5v regulator wrongly, and supplied 9v to the pic for the first time
- on one side of the pic I connected power to vss and ground to vcc

However, after noticing my mistakes and fixing them, I reprogrammed pic and got no error (I'm using MPlabX and PicKit2). Also the pic is not heating up or anything like that.

I triple checked all the wires and schematics, but there is only 5v in the two vcc pins, and 0v in the output ports.

This is my program:

    void main(void){
        TRISD = 0x00;
        PORTD = 0xFF;
    }


Could my pic be broken? and how can I check or debug the issue? I'm newbie at both soft and electronics.