W&T Electronics 58210, Manual

Page: 52 / 63

52
W&T
Firmware-Update
5.3 Network update of the AT command interpreter
Updating the firmware over the network offers the advantage
of a higher speed compared with the serial method. The
p r e r e q u i s i t e h o w e v e r i s t h a t n e t w o r k - s i d e r e m o t e
maintenance be enabled by the command
%N1 .
After establishing a TCP socket connection to Port 8000 on
the LAN-Modem, the latter returns a short identifier. If this is
replied to within three seconds with the character „U“, update
mode is started with the following message.
MB90F562 bootloader v1.x W&T xx/xxxx
Invoked by software, ESC to cancel
Waiting (Port 1)...
As in the case of a serial update, the LAN-Modem now
e x p e c t s t h e u p d a t e d a t a i n S r e c o r d f o r m a t . U n d e r
Windows the following method using a Telnet client and
pasting from the clipboard has proven useful.
Example with Telnet client under Windows 95/98/NT
1. Open the mhx file with the LAN-Modem firmware in an
editor and copy the entire contents to the clipboard.
2. From Start
r
Run
r
telnet [IP address] 8000 on a Windows
machine having a TCP/IP stack, the network connection
to the LAN-Modem is established and the message
„Wxxxx" appears.
3. Entering a „U“ within the first three seconds activates
u p d a t e m o d e , a n d t h e L A N - M o d e m s e n d s t h e
corresponding reply.
4. Use Edit
r
Paste to copy the firmware from the clipboard
to the LAN-Modem.
5. After a successful update the LAN-Modem breaks the TCP
connection. Any transmission errors are reported with
referenced to a checksum error.