I have an iPhone 4s with 5.0.1, jailbroken (which is why I don't have 5.1 as it's not jailbroken yet), Windows XP SP3, QuickTime 7.7.1 and iTunes 10.5 (didn't upgrade while waiting for news on MM4 sync, just in case), and MM4 does not recognize my iPhone.
I only had a very short time to try that last night. I also have the iTunes plugin installed, don't know if that could cause problems, or if iOS 5.1 is needed, or the latest iTunes.
For those that have MM4 recognize their iPhone, it would be useful to know the complete configuration details, i.e. iPhone model, iOS version, Windows version, iTunes version, QuickTime version, if you're jailbroken or not and if you have the iTunes plugin.
Hope to have it working soon!


