Originally Posted by
Jordan D
Specifically told that "it wouldn't be advisable" to put iOS7 on the iPhone4 by the Apple Store ... and I'm guessing that if I went online now, it wouldn't allow me to download iOS7?
It should still allow you to download that version, because iOS 8 is not supported on iPhone 4. And just because it was not "advisable", it does not mean that it could not be done. Older hardware + newer software sometimes cause issues, but it's down to you to decide whether to stay or make the jump.
Originally Posted by
Jordan D
Nonetheless - when iOS7 was the top version of the OS, BA didn't support iOS6 for the App.
This is not correct. Support for iOS 6 was introduced in the update released on Dec 10 2012. A few months before iOS 7 saw the light of day...