Recovering The Firmware; Figure 307 Example Xmodem Upload - ZyXEL Communications IES-1248-51 User Manual

IES-1248-51/51A/53 User's Guide

Figure 307 Example Xmodem Upload

Type the configuration file's location, or click Browse to search for it. Choose the 1K
Xmodem protocol. Then click Send.
4 After a successful configuration file upload, type
The IES-1248 is now reinitialized with a default configuration file including the default
password of "1234".

58.17 Recovering the Firmware

Usually you should use FTP or the web configurator to upload the IES-1248's firmware. If the
IES-1248 will not start up, the firmware may be lost or corrupted. Use the following procedure
to upload firmware to the IES-1248 only when you are unable to upload firmware through
FTP.
Note: This procedure is for emergency situations only.
1 Obtain the firmware file, unzip it and save it in a folder on your computer.
2 Connect your computer to the console port and use terminal emulation software
configured to the following parameters:
3 Turn off the IES-1248 and turn it back on to restart it and begin a session.
4 When you see the message
seconds
5 Type
atba5
to 115200 bps).
6 Change the configuration of your terminal emulation software to use 115200 bps and
reconnect to the IES-1248.
7 Type
atur
440
• VT100 terminal emulation
• 9600 bps
• No parity, 8 data bits, 1 stop bit
• No flow control
Press any key to enter Debug Mode within 3
, press a key to enter debug mode.
after the
Enter Debug Mode
after the
Enter Debug Mode
to restart the IES-1248.
atgo
message (this changes the console port speed
message.
Chapter 58 Troubleshooting