Appendix 1. Firmware Upgrade / Downgrade Procedure - ZyXEL Communications ZyWALL 1050 Release Note

www.zyxel.com

Appendix 1. Firmware upgrade / downgrade procedure

The following is the firmware upgrade procedure:
1. If user did not backup the configuration file before firmware upgrade, please follow the
procedures below:
Use Browser to login into ZyWALL as administrator.
Click Maintenance > File Manager > Configuration File to open the Configuration File
screen. Use the Configuration File screen to backup current configuration file.
Find firmware at www.zyxel.com in a file that (usually) uses the system model name
with a .bin extension, for example, "200XL1C0.bin".
Click Maintenance > File Manager > Firmware Package to open the Firmware Package
screen. Browser to the location of firmware package and then click Upload. The
ZyWALL automatically reboots after a successful upload.
After several minutes, the system is successfully upgraded to newest version.
The following is the firmware downgrade procedure:
3. If user has already backup the configuration file before firmware upgrade, please follow the
procedures below:
Use Console/Telnet /SSH to login into ZW1050.
Router>enable
Router#configure terminal
Router(config)#setenv-startup stop-on-error off
Router(config)#write
Load the older firmware to ZW1050 using standard firmware upload procedure.
After system uploads and boot-up successfully, login into ZW1050 via GUI.
Go to GUI
example, statup-config-backup.conf and press "Apply" button.
After several minutes, the system is successfully downgraded to older version.
4. If user did not backup the configuration file before firmware upgrade, please follow the
procedures below:
1. Use Console/Telnet /SSH to login into ZW1050.
2. Router>enable
3. Router#configure terminal
4. Router(config)#setenv-startup stop-on-error off
5. Router(config)#write
6. Load the older firmware to ZW1050 using standard firmware upload procedure.
7. After system upload and boot-up successfully, login into ZW1050 via
Console/Telnet/SSH.
8. Router>enable
9. Router#write
10. Now the system is successfully downgraded to older version.
Note: ZW1050 might lose some configuration settings during this downgrade procedure.
It is caused by configuration conflict between older and newer firmware version. If this
situation happens, user needs to configure these settings again.
"File Manager" menu, select the backup configuration filename, for
122/142