I have an iPhone 3GS old bootrom (and an iPad) both jailbroken and on 4.0.1. In Cydia, it shows SHSH blobs are saved for 3.1.3, 4.0, 4.0.1, 4.0,2, 4.1, and 4.2.1+ if that matters. I was syncing these to a Windows laptop that I sold (no longer in my possession) and now have a new Macbook Air. I would like to start syncing both my iDevices to my new Mac without having to upgrade to 4.2.1. I would like to stay on 4.0.1. Could somebody out there in the community let me know (1) if this is possible and (2) what steps I could follow to make this happen? A hearty thanks to you all.