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Chapter 34 Firmware and Configuration File Maintenance
P-793H User’s Guide
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The following table is a summary. Please note that the internal filename refers to the filename 
on the ZyXEL Device and the external filename refers to the filename not on the ZyXEL 
Device, that is, on your computer, local network or FTP site and so the name (but not the 
extension) may vary. After uploading new firmware, see the ZyNOS F/W Version field in 
Menu 24.2.1 - System Maintenance - Information
 to confirm that you have uploaded the 
correct firmware version. The AT command is the command you enter after you press “y” 
when prompted in the SMT menu to go into debug mode. 
34.3  Backup Configuration
"
The ZyXEL Device displays different messages explaining different ways to 
backup, restore and upload files in menus 24.5, 24.6, 24. 7.1 and 24.7.2 
depending on whether you use the console port or Telnet.
Option 5 from Menu 24 - System Maintenance allows you to backup the current ZyXEL 
Device configuration to your computer. Backup is highly recommended once your ZyXEL 
Device is functioning properly. FTP is the preferred method for backing up your current 
configuration to your computer since it is faster. You can also perform backup and restore 
using menu 24 through the console port. Any serial communications program should work 
fine; however, you must use Xmodem protocol to perform the download/upload and you don’t 
have to rename the files.
Please note that terms “download” and “upload” are relative to the computer. Download 
means to transfer from the ZyXEL Device to the computer, while upload means from your 
computer to the ZyXEL Device.
34.3.1  Backup Configuration
Follow the instructions as shown in the next screen. 
Table 124   Filename Conventions
FILE TYPE
INTERNAL 
NAME
EXTERNAL NAME
DESCRIPTION
Configuration 
File
Rom-0
This is the configuration filename on the ZyXEL 
Device. Uploading the rom-0 file replaces the entire 
ROM file system, including your ZyXEL Device 
configurations, system-related data (including the 
default password), the error log and the trace log.
*.rom
Firmware
Ras
This is the generic name for the ZyNOS firmware on 
the ZyXEL Device.
*.bin