I will make this as succinct as possible. My iPad was originally synced/setup to a Windows PC to which I no longer have access. I would like to update to the new iOS when it become available and keep my current content, such as songs, etc. A friend of mine has an iMac. If I tell iTunes to "prevent from syncing manually", is there a way to just grab the update and put it on the device via said iMac? Am I missing any caveats here? Are there any workarounds (I'm not interested in jail-breaking the device) to help me with my issue? Thank you in advance.