ZyXEL ZYWALL USG 100 User Guide - Page 125
What Can Go Wrong, 6.5 How to Manage ZyWALL Firmware
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Chapter 6 Maintenance The default configuration files are: • system-default.conf: This file contains all of the ZyWALL settings. If you apply this file, the ZyWALL's default IP address and password will be restored. • startup-config.conf: This is the configuration file that the ZyWALL is currently using. All the changes you have saved/applied in the Web Configurator or in CLI commands (when you use the write command) are applied to this file. • lastgood.conf: This is the most recently used (valid) configuration file that was saved when the device last restarted. If you upload and apply a configuration file with an error, you can apply lastgood.conf to return to a valid configuration. 6.4.1 What Can Go Wrong • You cannot upload system-default.conf or lastgood.conf. • During boot up, the ZyWALL first applies start-up.conf. If the application is successful, it will be copied into lastgood.conf. If the application fails, the ZyWALL will try to apply lastgood.conf. • If lastgood.conf.fails to apply, the ZyWALL will restore by using the system-default.conf file so that the device can boot up normally. 6.5 How to Manage ZyWALL Firmware Click Maintenance > File Manager > Firmware Package. Use this screen to check current firmware version and upload firmware to the ZyWALL. ZyWALL USG100-PLUS User's Guide 125