Chapter 65 File Manager
ZyWALL Series CLI Reference Guide
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1 The boot module performs a basic hardware test. You cannot restore the boot module if it is damaged.
The boot module also checks and loads the recovery image. The Zyxel Device notifies you if the
recovery image is damaged.
2 The recovery image checks and loads the firmware. The Zyxel Device notifies you if the firmware is
damaged.
65.10 Notification of a Damaged Recovery Image or
Firmware
The Zyxel Device’s recovery image and/or firmware could be damaged, for example by the power
going off during a firmware upgrade. This section describes how the Zyxel Device notifies you of a
damaged recovery image or firmware file. Use this section if your device has stopped responding for an
extended period of time and you cannot access or ping it. Note that the Zyxel Device does not respond
while starting up. It takes less than five minutes to start up with the default configuration, but the start up
time increases with the complexity of your configuration.
1 Use a console cable and connect to the Zyxel Device via a terminal emulation program (such as
HyperTerminal). Your console session displays the Zyxel Device’s startup messages. If you cannot see any
messages, check the terminal emulation program’s settings (see Section 1.2.1 on page 28) and restart
the Zyxel Device.
2 The system startup messages display followed by “Press any key to enter debug mode within 3 seconds.”
Note: Do not press any keys at this point. Wait to see what displays next.
Figure 45 System Startup Stopped
3 If the console session displays “Invalid Firmware”, or “Invalid Recovery Image”, or the console freezes at
"Press any key to enter debug mode within 3 seconds" for more than one minute, go to Section 65.11 on
page 555 to restore the recovery image.
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