Hello, my name is ***** ***** I will be assisting you today. You stated that you have already tried the default. Just to be sure, did you try "1234" as well as "0000" If not, give that a try.
I am going to assume this has been tried and was unsuccessful. As I have been looking in to this, unfortunately, I have found that the company keeps the reset process/software from being publicly available. I hate to be the bearer of bad news and please remember that I am just the messenger. The way I see it, you only have a couple of options:
You will have to decide if it's worth the money to do this. I wish I had better news, but I have been searching for nearly an hour and there just isn't any other way I can find for you.
Good luck with this, I hope my answer has provided you with the information you need to proceed from here.