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Reloading Software Updating Software
D-2
D.2 Reloading Software
The MPS stores software in Flash ROM to control the initialization process, operation, and
command processing. The contents of Flash ROM can be updated by downloading a new
version of the operational software via NetWare, TCP/IP, or MOP. Regardless of which
protocol is used to update Flash ROM, the following points are important:
◆ The Flash ROM software file name, MPS.SYS, should not be changed.
◆ The download file should be world-readable on the host.
◆ There is a sixteen character length limit for the path name.
◆ There is a twelve character limit for the filename.
◆ Define commands must be used because Set configurations are cleared when the
MPS boots. Use the List Server Boot command to check settings before rebooting.
Note: It is important to check MPS settings before using the Initialize Reload
command to ensure that you are reloading the correct software file.
D.2.1 Reloading Sequence
If DHCP, BOOTP, or RARP is enabled on the MPS, the MPS will request assistance from
a DHCP, BOOTP, or RARP server before starting the download attempts. The MPS will
then try TFTP, NetWare, and MOP booting (in that order) provided that it has enough
information to try each download method.
Downloading and rewriting the Flash ROM will take approximately two minutes from the
time the Initialize command is issued. If the download file cannot be found or accessed,
the MPS can be rebooted with the code still in Flash ROM. The OK/ACT LED will blink
quickly while the MPS is booting (and reloading code) and then slowly when it returns to
normal operation.
Note: If you experience problems reloading Flash ROM, refer to Trouble-
shooting Flash ROM Updates on page D-4.
D.2.1.1 TCP/IP
Before the MPS downloads the new software, it will send DHCP, BOOTP, and/or RARP
queries (all are enabled by default). Next, the MPS will attempt to download the MPS.SYS
file using TFTP (Trivial File Transfer Protocol).
Note: EZWebCon can also be used to reload software.
If a host provides DHCP, BOOTP, or RARP support, it can be used to set the MPS IP
address (all methods) and loadhost information (BOOTP and RARP only).
Some BOOTP and TFTP implementations require a specific directory for the MPS.SYS
file. See your host’s documentation for instructions.