DEV 1 mode on h20

Hi
how to make the dev1 mode to work with a h2O chip on a v7
I want to laod hdloader from memory card

from standby
hold reset for 3-4 seconds to turn on
let go and then tap reset again to reboot
it will then boot mc0:BOOT\BOOT.ELF

Thanks yes how to install dev mode on my mc?
I have a v7 with h20 modchip

here you go
http://psx-scene.com/forums/attachme...7&d=1137931293