Dec 03, 2010 Cydia was recently updated to support Apple's updated API's in iOS 4.2. This particular Cydia update was quite the major overhaul, and there is no option. The Current Status Of iOS 4.2.1 Jailbreak for iPad [Cydia Apps, Compatibility List]. Been updated for iOS 4.2.1 but it still doesn't. Perfectly is iFile.

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