I've got myself stumped on this bizarre issue involving both partitions.
Build 14524 on P1, and a newer build 15469 on P2 both configured to a 10.10.1.0/24 subnet. Both have been chunking along just fine until I took down the router to clean up some cable clutter today and on bootup, wifi failed to start. Now the fun starts.
I could connect to 15469 on wire, but only on 192.168.1.1 and wonder of wonders, none of my previous config settings remain - just like a brand new bootup from a sysupgrade.bin. Worse, nothing was getting by the "No Password Configured" prompt.
Off I go to P1 alternate partition only to have a similar issue here - it fires up like a new sysupgrade.bin as well on 192.168.1.1 wanting a password configured. Again, none of the previous settings remain, but I could set a new password, configure my wifi, and interface and had internet access. Problem is, a reboot takes me right back to the same place with no config setting retained.
If I restore from backup, it comes back up as a new sysupgrade. I can also manually restore each individual backup file and everything works as it should until a reboot once again wipes all configs away.
Desperation sets in and I reflash 15469 on P2 - it all looks normal, but again impossible to get past the password config prompt. Back to P1, add password, config network, wifi, interface and I'm running again sort of so I decide to try to and put OEM back to P1 by:
/tmp# sysupgrade -F -n -v FW_WRT1900ACSV2_2.0.3.201002_prod.img
Image metadata not found
Image check failed but --force given - will update anyway!
Commencing upgrade. Closing all shell sessions.
Connection to 192.168.1.1 closed by remote host.
Connection to 192.168.1.1 closed.
Again, I can connect to wire on 192.168.1.1 but I get no Linksys UI other than their standard Linksys blue wallpaper image but no wifi available.
Strangely, all three firmwares allow me access to the internet on a 192.168.1.1/24 subnet.
Can anybody give me any other method that might get me over this oddity?