Does anyone have issues using the Firmware Upgrade tool specifically when using SCP rather than TFTP? I am able to successfully get our upgrades to work while using TFTP, it just takes hours to upgrade some of our routers. I was able to use SCP at one point but haven't been able for a few months now. The error I get is that the username/password is invalid on the SFTP/SCP server. I have tried reinstalling the SFTP/SCP server, changing credentials multiple times (on both the server and NCM), and even removing credentials all together. I have had 3 phone calls with support as well, but we are unable to figure out the issue. I have a hunch that the SCP username/password may be cached somewhere and it keeps denying them because they are incorrect.
Any insight is much appreciated!