Overturn it? Probably not; you do not indicate when these events happened, but you give the impression they were some time ago, and it is probably too late to directly challenge it.
That said, you may be incorrect as to the legal implications, for firearms, adoptions, etc. I suggest you re-direct your question to criminal defense counsel, who can advise you as to the imact of the conviction, and your options for sealing or expunging it.
Answered on Jul 24th, 2014 at 9:00 AM