Take it to your local electronics store.
0000fe00
Get a new one.
yes
Yeah and then the person will fix it
if you mail it back to the Nintendo company, they'll fix it for free once
well you can look it up online if not then sorry but your dsi is destroyed
try to blow in the DSi around the butten, for this use pressed air NOT your mouth.
Shut it off, then turn it back on.
Well basically you can't get rid of the update you have to return it for a new dsi that has not been updated
hump it and get knocked up and have a dsiby
My L button doesn't work either. I don't know how to fix it, but a specialist will have to do the job.
Sorry but this is my best answer: go to a computer repair place and see if they can fix it.