4.2 applications on iphone 2g

Hi there friends i know i always showed up after long times but whenever i showed up i brought some usefull information for my readers this time i bring the method to run 4.2 apps on 2g without upgrading the firmware. It is a very simple method first go in cydia search in cydia ifile install it after that open ifile go in the root / this is root after that go in system than library after that core services in that folder you will find a file name system version or similar edit that file and replace you os version with 4.2.1 than save the file download any file which required 3g and os 4.2 download and install that app and you are good to go with it. :D