Westermo IDW-90 AT - Manual (Page 73)

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6. Software update
The IDW-90 uses a Flash-EPROM for software updates to store the operational software.
This software can be updated from a local connected PC via the COM port or via a
remote configuration connection. Carry out the following steps to update the IDW-90:
… Start a terminal emulation on your PC with the capability to run an X-MODEM
file transfer (i.e. HyperTerminal).
… Enter the AT command "AT**FLASH" to start the update procedure.
The IDW-90 will send the message "Erasing flash EPROM now. Please wait...".
… After erasing of the Flash-EPROM the TA sends out the request for the down-
load procedure with the 1kX-MODEM protocol:
"Start your XMODEM transfer now (Ctrl-X aborts) ..."
… Start the 1kX-MODEM file transfer (send file or upload) by selecting the Transfer
/ Send File menu point in your terminal emulation and select the new software.
The internal timeout of each X-Modem block is set to 10 seconds.
… After completion you will get information on whether the software update
ended successfully or erroneous.
• Positive result:
• "Loading procedure ended successfully".
• Negative reason: • "Checksum error." (for example)
• Negative result: • "Flash EPROM software is probably not executable".
… The loaded new firmware will automatically start after a software reset.
… (Give the IDW-90 about 15 seconds to activate the new software.)
… Due to new functionality the last stored configuration setting may be lost,
please check before using.
Note: Due to an error it may be that no firmware is active within the TA. This will be
indicated by flashing of the LEDs (Bootloader active). To store a new firmware
correctly you have to enter the command "AT**FLASH" again and load a firmware
using the XMODEM protocol as described above. This boot loader supports only
AT**cmd with fixed baudrate of 115.200 Baud.