open what? the flash0? use the VSH menu, the xmb usb option.
lol, if you mean using the newest update, your not going to do it. you need to 1. decrypt the firmware on your computer, then when u have the files, you need to decrypt ALL the other folders, then from there, you need to rewrite the files to have custom modules. such as dax's. so good luck with that, your gunna need it.