i have downloaded a new dol r815.dol i change it to boot.dol and place it on my sd apps/usbloader and i over write the one thats all ready in the folder
now that i have a new dol do i all so need a differnt forwarder for the r815.dol ore will the forwarder use the new dol whitout anny probs
That's why forwarders are used. It allows you to update boot.dol without installing new channels all the time.
You could have just tried it out.
Not really doing much Wii stuff these days.