help pls

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http://forum.xda-developers.com – sir have lg optimus p990. i rooted my phone and downloaded root uninstaller. i uninstall some default apps. my problem is . i want to get back the apps that i have uninstall. but when i reformat my phone. it doesnt solve my problem. the apps are still missing. how can i get those apps back without flashing my cp? ty (HowTos)