I have a Nighthawk R7800 and have no problems accessing it via the IOS Nighthawk app. I can do things like load the Device Manager to see the devices currently connected to my network, and see my current WiFi settings. But the firmware update functionality never works. I bring up the Router Settings in the app, and click the "Check For Updates" button. The app then loads a screen saying it's Checking for New Firmware, but after about 20 sec or so a "Firmware Check Error" page appears in the app, with the message "There was a problem checking firmware update".
Any idea what's going on? I believe I have the current version of both the Nighthawk app and the IOS operating system.
Note: To avoid wireless disconnect issues during the firmware download process, NETGEAR recommends that the firmware upgrade be performed on a computer with a wired connection.
If you don't have wired access, then you could try the browser on your mobile device.
By the way the "Check For Updates" button isn't always reliable either. It can miss updates that are available on the support pages for the device.
There is support for the R7800, including a manual and firmware, somewhere at the end of this link:
The firmware would be loaded over the typically wired Internet connection to the router - its download won't loop over the mobile device. So not a problem at all.
PS. I'm almost always - for years - working from my notebook on a wireless connection for all my consulting and remote administration and audit work. Figure. Can't be that bad.
