why do you have to ask? usbloaders work with cIOS.
use the slot where you installed a cIOS.
if the flash is the problem, fix the problem by not using a flash.
don't try to bypass, and do wrong thing and make complicated workaround just because you "don't want" to do what you have to.
you prefer doing complicated steps, instead of easy one, just because you want to keep a non working device?
please, just, please, stop.
use HDD, and stop trying to find solution for something which you shouldn't bother with.
really, everybody should STOP using flash drive, and asking for help and bothering every body else to find a solution for a problem which doesn't exist to begin with if you hack your console properly.
You don't want to do what you should and you expect things to work anyway, and your way? why?
don't be cheap, buy a HDD, or keep your problems if you like having them.
Okay