ZyXEL Communications B-420 User Manual

ZyAIR B-420 Wireless LAN Ethernet Adapter and Bridge 

13-2 

Firmware and Configuraiton File Maintenance   

Configuration File 

Rom-0 

*.rom 

This is the configuration filename on the ZyAIR. 
Uploading the rom-0 file replaces the entire ROM file 
system, including your ZyAIR configurations, 
system-related data (including the default 
password), the error log and the trace log. 

Firmware 

Ras 

*.bin 

This is the generic name for the ZyNOS firmware on 
the ZyAIR. 

Option 5 from Menu 24 – System Maintenance allows you to backup the current ZyAIR configuration to 
your computer. Backup is highly recommended once your ZyAIR is functioning properly. FTP is the 
preferred method, although TFTP can also be used.  

Please note that the terms “download” and “upload” are relative to the computer. Download means to 
transfer from the ZyAIR to the computer, while upload means from your computer to the ZyAIR. 

Enter 5 in Menu 24 – System Maintenance to get the following screen. 

Menu 24.5 – Backup Configuration 

To transfer the configuration file to your workstation, follow the 

procedure below: 

1. Launch the FTP client on your workstation. 

2. Type "open" and the IP address of your router. Then type "root" and 
   SMT password as requested. 

3. Locate the ‘rom-0’ file. 
4. Type ‘get rom-0’ to back up the current router configuration to your     

   workstation. 

 

For details on FTP commands, please consult the documentation of your FTP 

client program. For details on backup using TFTP (note that you must 

remain in the menu to back up using TFTP), please see your router manual. 
 

Press ENTER to Exit: