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AES-100 User’s Guide
Firmware Upload 10-1
Chapter 10
Firmware Upload
ZyXEL periodically releases new firmware for the AES-100 for bug fixes and enhancements. Please
check the web site at www.zyxel.com every now and then for the latest firmware release.
The AES-100 has two ways to update firmware; one is done through BOOTP/TFTP and the other uses TFTP. The
differences between these two methods are as follows:
♦ Update timing:
A BOOTP/TFTP update is done when the AES-100 is restarted, while a TFTP update is done during operation.
♦ Protocols used:
A BOOTP/TFTP update uses BOOTP and TFTP protocols, while a TFTP update uses TFTP protocol only.
♦ Remote update:
A BOOTP/TFTP update requires the AES-100 and your computer to be located on the same LAN, but a TFTP
update does not have this restriction.
♦ Firmware files used:
A BOOTP/TFTP update uses a file with a “.bin” extension name, while a TFTP update uses a file with an
“.img” extension name.
♦ The role of the AES-100:
A BOOTP/TFTP update uses the AES-100’s built-in BOOTP/TFTP client, and a TFTP update uses the AES-
100’s built-in TFTP server.
♦ The impact to the AES-100:
A BOOTP/TFTP update overwrites the AES-100’s firmware and all configuration files, while a TFTP update
overwrites the AES-100’s firmware only.
10.1 BOOTP/TFTP Firmware Update of the AES-100
The AES-100 uses BOOTP/TFTP for firmware updates through its built-in BOOTP/TFTP client when the AES-
100 is restarted. To update the firmware, first download it from the ZyXEL web site and store it on your computer.
You can use any BOOTP/TFTP server (for example, BootpTftp.exe) to update the AES-100’s firmware. The
update procedure for BootpTftp.exe is as follows:
Do not turn off the AES-100 during the updating process, as it may corrupt the firmware and make your
AES-100 unusable.
Step 1. Connect your AES-100’s LAN port to a computer’s LAN port directly using a crossover Ethernet cable,
or connect both to an Ethernet hub/switch using straight-through cables.