The following tutorial will enable you to move your downloaded Youtube videos on your iPhone to the camera roll app. This will give you complete video editing capabilities of iPhone 3GS with which you can trim and share your downloaded videos on your iPhone, and then sync them with your PC or Mac. You can also make it work with your iPhone 2G, 3G and iPod touch by first following the tutorial posted here on How-to: Enable iPhone 3GS Video Editing and Camera Roll in iPhone 3G, 2G and iPod touch before following the guide posted below.
Those of you who have jailbroken your iPhone with blackra1n and then later unlocked it with blacksn0w might have faced issues with Youtube not working, WiFi not connecting to any hotspot and other issues related to GPS. Some of you got it fixed by following our guide posted here which used Push Fix app from Cydia. This app, which was available on iPhoneil repo was removed shortly after we posted about it. The good news is that the app has now been repackaged and rebranded as “Push Fix & youtube” and is now available for download via Cydia. “Push Fix & youtube” is guaranteed to fix all the issues that you may be having with the Youtube app not working after blackra1n jailbreak.