R6700v3 Firmware Update Failure

[sl21]

Upon attempting to conduct recommended firmware update through app, after clicking "Check for Updates" tab, getting a "Firmware Check Error" message repeatedly with no ability to bypass.  Thoughts?

[plemans]

You can try manually updating

https://kb.netgear.com/23960/How-do-I-manually-update-the-firmware-on-my-NETGEAR-router