Will Jailbreaking my Iphone 3G allow me to install apps?

Currently have Iphone 3g running on iOS 4.2.1 will not upload apps from app store until i upgrade the iOS to at least 6.0. If i jailbreak it will it allow me to upgrade then?

For Iphone 3G final ios available is ios 4.2.Above ios 4.2 is not compatible for 3G. Ya you can install craked paid apps afer u jailbreak but only limited apps that supports ios 4.2. You can't instal any apps that needs ios 4.3 ios 5 or ios 6. Even if you jailbreak

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