code will be incompatible with r45 for sure;
there was a bug once that made it impossible to compile gcc5 with gcc6, not sure about the other way around
Instead of blocking the conntest page, I'd lock the url specifically used to check for browser updates
https://cbvc.cdn.nintendo.net
(example complete url for fw9.9: https://cbvc.cdn.nintendo.net/SNAKE/1/EUR)
Because Capcom doesn't care.
The thing I posted comes from the old EULA, but it still applies in the current privacy policy:
"Information we collect automatically. We collect some information automatically when you use our products and services. Some types of information we collect...