I'm trying to do exactly the same this morning.
When I open Viewer Builder and try to modify the app (v19, multi-issue) you couldn't go back and select ipad and iphone devices with iOS.
I didn't try, but I think you probably have to create a new app with the same ID and settings, new certificates, etc... and submit to Apple this new one as an update.
Am I right?
Yes, you are right, you need to re-create app in VB.
Ok, it's fine, the app works almost fine...
I've installed the developer-viewer on the iPad3 and iPhone4S.
Unfortunatly it doesnt show the highest resolution icon...
I've created and select the 29,50,57,58,72,100,114 and 512 pxls pictures
Is it because it's not already approoved by Apple?
In your list, you are missing one icon size - 144 px. This is correct size for standard icon on iPad 3.
Yes, that's right!
I haven't understand the new VB and the icons and splashscreen pictures.
Thanks a lot!