English here:
1) Delete c:\system\apps\systemexplorer\systemexplorer.app
2) Copy this one to the same dir.. 
3) Now the nag is ripped and your are able to use this forever!
4) If the app icon is gone in the menu the restart your phone! 

DavidLanz

and Chinese here :

1) 使用Handy File等檔案管理軟體，刪除手機裡 
    c:\system\apps\systemexplorer\systemexplorer.app 
2) 複製附加檔案裡的破解檔「SystemExplorer.app」至 
    c:\system\apps\systemexplorer\ 
3) 關機，再重新開機... 

DavidLanz