First af all We have to install (.sis)  files and then the folders
which contains (.app) Files <-- u must replace the app file Through

<FileMan>---->(Provided in this Zip folder)

After installing Fileman you must 
<-- open fileman and  move towards
<e\system\apps\applicationname><-- and then in application replace it



::::IF FILE IS IN PHONE MEMORY::::
If the file is in phone memory You must 
<-open fileman and  move to words <c\system\apps\applicationname><-- and then in application replace it  