Latest H-JTAG release comes with H-Flasher
http://hjtag.blogspot.com . It comes with the H-Flasher. With this
software, you don't need to use any IDE tool and you are able to
program the LPC chip via JTAG interface directly! I have tested it
with Olimex ARM-JTAG, it works fine and fast.
I am really impressed by the author TwentyOne who writes H-JTAG and H-