Have you always hated how long your YouTube app for iOS takes to load videos? Do you wish your internet was AT LEAST twice as fast as what it is right now? Then here’s a great tweak, called TCP Optimizer which comes for free, to all jailbreak users.
To get this tweak working, what you need to do is include the http://cydia.pushfix.info/ repository, or any other package manager that is supported, in to Cydia. Once you refresh the sources, you’ll start seeing TCP Optimizer in the package listings. So without restarting, the fix will start functioning.