Electronic – Problem programming PIC18F97J60 with PicKit2

MPLAB C30 comes with a utility "mplab-bin2hex" which is used to convert elf and coff files into hex format. elf and coff are two types of binary file that the mplab toolchain can create, and both must be converted to hex to upload with the pickit2. If you're in Linux that is located in /opt/microchip/mplabc30/[version]/bin. If you are in Windows, I have no idea where it is.

The PIC may have been told to 'raise its shields' or may have been programmed to not respond to the programmer clock or oscillator control network. These problems are usually recoverable by following a suitable path. A circuit diagram of your target application may be useful.

Without looking at your specific PIC:

You may have code protection set.
The device should be able to be erased with code protection set.

You may have selected a clock type that the programmer does not support.
Worst case if it is not seeing your programmer clock or crystal you may have to uses ICSP with the PIC in a breadboard and supply a clock source or crystal or resonator or RC network or whatever that allows the PIC to run so it can listen to the programmer well enough to find its way home.

There is a small chance that it has been damaged in the process and is irrecoverable. Be sure to use adequate anti-static precautions and correct operating voltages, insert and remove with power off, ensure that no signal levels exceed absolute maximum values.