Answer:
make an appeal, go to a higher justice court system, make sure you 100% know the mistake was made, try doing some research and backtrack the case.
Answer:
I'm pretty sure you can do a few things out of which I know 1
I think you can point out the mistake
provide any proof against that if you have any
and ask for another trial to take place
sometimes if there is a lot of proofs against you they might not redo the trial