I'm working on an app called OpenBackup. It backs up your Cydia packages and their preferences. I have already tested it as a Terminal script, but the app needs more testing before I submit it to Cydia. Testing it requires restoring your iDevice to make sure the backup feature works. I'm looking for testers who have been a part of the jailbreak community for a while and know all about transferring files from their iDevice. If you're interested, PM me. This package will be submitted to Cydia free and open-source after testing.