We can't give any support for beta's. Those are strictly between developers and Apple. So if you discovered an issue, let your friend discuss it with Apple. They'll be happy to help.
Kees
My friend has a developer account, so I got the first beta then downloaded the rest over the air. On iOS beta 7 half of my pictures are black, some are blurry unless I hit the edit button. I had this same problem on beta 5, but was able to move them to an app that transferred my pictures over WiF, but can't do that anymore. I can't do anything for most of my pictures. The only option I have left is to email each picture to my email. So my question is, how am I able to sync my iPhone 4 to iTunes which is also beta 7, so I can at least get the new iOS5 on October 12, with or without my pictures. The pictures would be a plus though!

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