thanks you for all your response very much.
about the time
(1) I made a little change for the time of the arrest to protect my friend's privacy, so when he started this petition, it was barely within 2 years.
(2) sorry, it was just a typo for "we". My friend does not speak English well, I just help the translation.
(3) For this case, it is obvious that the police made a wrong decision and arrested the actual victim, without careful investigation. However, it is never easy for the authority department to admit they made a mistake. And the law hinders innocent people to get their innocence back very quickly.
My friend is desperate now after reading these responses. Could any one be still helpful for this actual victim？
(pls do not be picky about my expression, my English is not very good either; he has enough evidence to prove he is the actual victim, so do not picky about the statement here)