Writing bootloader with PICkit 3

http://www.microchip.com/mplab/mplab-x-ide

Run MPLABX installer

Sellect MPLAB IPE.

Run MPLAB IPE.

Select device and tool.

Family : Advanced 8-bit MCUs (PIC18)
Device : PIC18F45K50
Tool : PICkit3

Connect power to your USB-IOBOARD using microUSB cable.
Then, connect PICkit3.

Apply && Connect.

Bootloader Download.

fw.zip

Select the bootloader hex file.

Run Program.