models/User.php
public function unblock()
	{
		$this->status = User::STATUS_ACTIVE;

		if ($this->save(FALSE))
			return TRUE;

		return FALSE;
	}
public function unblock()
	{
		$this->status = User::STATUS_ACTIVE;

		if ($this->save(FALSE))
			return TRUE;

		return FALSE;
	}
Unblocks the user and sets the status to ACTIVE