Reset Administrator Password for Sentinel DX4000

Hi All,
I need to reset the Administrator password for a Sentinel DX4000, I have found a couple of links saying that I need to use an USB or use the Server Recovery ISO ( but I can’t find it. Where can I download this ISO? Or there is another way to reset this password?

Thanks you in advanced and best regards,
Alberto Medina

reset/change you can do from the dashboard under computers.

If you have lost the password you will need to set the server back to defaults with the iso and I don’t know where you get that now. I tried to ask in the backchannel and made no progress.