So the story goes from
Hello, my friend's account was banned due to spam or plagiarism, but he didn't do anything. Most likely it was banned by mistake, please check.
To:
We apologize. We made a mistake that we regret very much, we were young and stupid, but this will not happen again.
Is there any hope for unban.
Sounds to me like you're not being very honest here, nor were you being honest when you were plagiarizing--so why the fuck should anyone expect you to suddenly change your ways? I'd also submit that you're not that much older than when you broke the rules, which means you're probably just as stupid as you were then. Any promises you make that you won't violate forum rules again should be discarded out of hand, and the permaban shouldn't be removed.