D6400 Firmware uploads but will not install

[martinpleasance]

System indicates a new firmware upload is available.  When selected it appears to downlaod but then shows ERROR -1 and will not install.  Am currently stuck on Firmware Version V1.0.0.74_1.0.74

Any ideas please?  Thanks

[antinode · Accepted solution]

> [...] Any ideas please? [...]

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "Manually
Upload New Firmware and Update the Modem Router".

[antinode · Accepted solution]

> [...] Any ideas please? [...]

      https://en.wikipedia.org/wiki/RTFM

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual.  Read.  Look for "Manually
Upload New Firmware and Update the Modem Router".