Archive not readable.

> Archive not readable.

   Huh?  Says who?  When you do what?

> I can't seem to download any of the updates. [...]

   "can't"?  "seem"?  Not a useful problem description.  It does not say
what you did.  It does not say what happened when you did it.  As usual,
showing actual actions (commands) with their actual results (error
messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.  Any actual information might be more
helpful than "can't seem to".

> [...] When it asked me if I'd like to try a password, I try my
> password, [...]

   "it"?  _Which_ "my password"?

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "Types of
Logins" and "Factory Settings".  Further reading might not hurt, either.

> [...] my security questions [...]

   Did you ever set them?  Many Netgear router models/firmware versions
have buggy password recovery programming, and will ask questions for
which it doesn't know the answers, leading to minimal progress.  In
such a case, you might resort to a settings reset, to restore the
default credentials.