54 CHAPTER 5: S OFTWARE MAINTENANCEEnter the file control submenu and enter <2> to set the application file type.Please set application file type in cf:M=MAIN B=BACKUP S=SECURE N=NOTYPE********************************************************************NO. Size(B) Time Type Name0 15561860 Jul-10-2006 14:14 N cf:/main.bin********************************************************************Enter File Name:cf:/main.binSelect the application program as the main boot file, and enter its complete pathand file name.Modify this file Attribute:1. +Main2. -Main3. +Backup4. -Backup5. ExitEnter your choice(1-5):1Enter “1” to set the selected application program to be the main boot file, i.e. thedefault boot file of the system.Step 6: Enter <5> to exit to the main BootROM menu. Enter <1> to boot from theCF card.c CAUTION:■ The file in the CF card will be overwritten if the file name being input is thesame with the original file name in the CF card.■ Make sure the space on memory is sufficient. Or, the system promptsinsufficient space:Updating File main.binInsufficient CF Card space or failed device writing operation■ The file updated will directly replace the original file of this type to become theonly application program. The main.bin file downloaded here will replace theoriginal M file directly to become the main boot program.■ Refer to “Files” on page 41 for detailed descriptions of file types.MaintainingApplication Programand ConfigurationThrough CommandLinesAfter booting the router normally, you can upgrade and backup applicationprogram and backup and recover configurations under command line mode.Maintaining the Routerwith TFTP ServerThe TFTP service provided by the router is TFTP Client - the router serves as TFTPClient, and the file server serves as TFTP Server. You can input commands toupload the configuration file and application program of the router to the fileserver, or download configuration file or application program to the router fromthe file server.