The popular peer-to-peer file sharing app Bump was updated to version 3.5.8 today, and according to the change notes one of the features has been removed. Apparently at Apple’s request, the developers have disabled the ability to share music from your iTunes library to another Bump user or your computer.
New in 3.5.8:
+ Bug fixes and performance improvements.
+ We’re sorry, but we are no longer permitted access to iTunes audio files on the device. Removing access to iTunes audio files in the file sharing section.
If you want to keep this feature, be sure to save a copy of the old version of the app in case you accidentally update. You can just drag the Bump icon out of the Apps section of your iTunes library and drop it in a folder to keep it there. If you ever accidentally update to the new version, you can just delete the app from your phone and iTunes library, then drag the old version into iTunes and reinstall it on your device from there.
If you’re jailbroken and want to avoid an accidental update, the free tweak Update Hider can hide the update from the App Store entirely.