Is DNS settings under: Settings > Internet Connection > Edit networks > Advanced settings ?

Just now, I first changed the router's security from 'WPA-PSK [TKIP] + WPA2-PSK [AES]' to 'WPA2-PSK [AES]'. After rebooting the phone, it temporarily loaded pages again. There was a thread earlier (prior to flashing) that prompted me to do this, which originally allowed pages to temporarily load. There is no indication that WIFI connection is dropping (icon is always white, after 'initial connection's blue blinking').

The router indicates 3 DNS server addresses
198.142.235.14, 211.29.132.12, 198.142.0.51
.... which I have manually put into the N9 & alternated between a few times together with router security settings.
Still having no success.

A fresh N900 connects & loads pages fine.
There's NO other WiFi signals (conflicting WIFI channels).

Update:
When connecting WiFi, I have to wait a few minutes before trying to load a page, and then it works fine. Sometimes when the phone is left idle, I have to wait a few moments before attempting to load a page for it to work. Does this seem normal? ... the only auto disconnect setting is under 'battery settings'?

Update2: May get it sorted https://talk.maemo.org/showthread.php?t=90345

myExplorer, RepoMirror (0kB had me worried) & warehouse installed, 'developer mode' is working.