There's a few different bootloaders here and there (such as TinyBootloader), the one i use is made by Mecanique and come with the full version of MicroCode Studio, the schematic you need to use is like bellow...


In your PBP code, you just need to add
Code:
DEFINE LOADER_USED 1
in Microcode studio, you choose MicroCode Loader as programmer.

Further explanation... http://www.mecanique.co.uk/products/...ootloader.html

HTH