Booloader for Microchip dspic33 series using the boot block

I require a serial bootloader for a microchip 33FJ128GP706A micro controller . The bootloader should work with a simple terminal emulator such as Hyperterminal using software handshaking. It should also be possible to use over a 485 connection using two control lines to set the data direction. The bootloader should reside in the boot section allowing for protection using the protection fuses. All pin defines will be provided along with xtal description. There is no requirement for encryption this is a simple straight forward development tool. Kind Regards Jay