If you use Google Drive and just hate how the iOS app limits you to what files you can upload to your Google Drive, then you may wanna get your hands-on this new jailbreak tweak dubbed GDUploadAny by iOS developer iMokhles.
This tweak adds a new green coloured button to the Google Drive app that will open a filesystem viewer so that you can upload just any file from your iOS device filesystem to your Google Drive. A preferences page is also added to the Settings app where you can turn the tweak on or off.
GDUploadAny is available in Cydia’s BigBoss repo right now for $1.49 and of course requires the Google Drive app from the iOS App Store. The tweak is compatible with both iOS 7 and iOS 8.