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BLAMP!
yes! :P
from the wii frontend:
wii options > wii settings > (move one page >) > internet > connection settings > (choose connection save socket/1-of-3) > (choose wired or wifi network) >...

^^ you may have to hunt down the cIOS stub, or GX may do it for you?
try scrubbing all custom settings back to factory defaults, or a clean install.
and back on the disk, i overlooked some of those...

^^ :?
yes, look up 'cleanrip 2.0.0 by emu_kidid' on the web, not attaching it here.
it's an app that uses the wii disk drive to dump the games clean 1/1 retail.
the usb loaders strip the update...

^^ there's your combo right there, JD & GF + tech, a stupid idea. :P
anyway,, as for the question, no, it won't fuck your console, assuming by op the update req is when the game disk is loaded?
if...