How to read PIC serial no. from EEPROM with PBP?

[rmteo]

The serial number described in 17.10.6.1 Device Descriptor is that of the USB device you are creating and not that of the PIC18F4550.

[Melanie]

You can set eight unique User ID Bytes (either at program time with your programmer, or at run time through your program (on 18F types), but there is no actual unique 'Serial Number' embedded into any PIC, just a product family ID (which is usually used by good programmers to warn you if you have inserted an incorrect PIC for the program you are about to burn).