Can I change firmware on WinSCP or through ssh to stock firmware? I’m not able to access the web interface and tftp isn’t working. I was finally able to log in!
Generally speaking, yes, you should be able to revert to stock via ssh connection. Though, the procedure might differ between devices.
The wiki page for your device will probably mention how to revert to stock. If not, then you may mention it here so people can help you (and you may like to edit the subject line accordingly).
It’s a Netgear WNR1000 v3
I am afraid the Wiki doesn't say much about reverting to stock, but see if this post will help