I've installed OpenWrt on several devices recently with no problems.
However, with my NWA55AXE, installation always fails and reverts to stock firmware. Of course, I know about the A/B partition issue, so I've tried flashing stock firmware first, followed by OpenWrt, but it still fails. I have 2 of these devices and it's the same with both. My stock firmware settings are not lost when I flash a new version.
My only clue as to why this might be is that the installation instructions vaguely say
Set your IP to 192.168.1.20
Open Web UI at 192.168.1.2
but I haven't done this, because why? Is it necessary? If so, what should have IP 192.168.1.20? Also, if I set the NWA55AXE's IP to 192.168.1.2, this will cause problems as this address is already in use on my network.
Advice would be hugely appreciated!