XM1240S AT Command Reference Manual
No. XM1240S-A00-106
xmodus swiss GmbH
43 / 46
8. FIRMWARE
UPDATE
The linear flash memory uploader allows flash memory to be upgraded with revised
modem firmware. This process transfers (uploads) the upgraded modem firmware
(data) from the host computer to the ISDN-modem which transfers the data to the
flash memory device.
When the AT**FLASH command is issued, the modem firmware boot loader is
invoked and the user will then load the new modem firmware which the flash memory
uploader will then program into the flash memory device. This transfer is done via the
1K X-Modem protocol.
1. Put the new modem firmware file (i.e. AL5068S V1.13.txt) in an appropriate
directory on the computer’s hard disk.
2. Configure the communications application program (HyperTerminal) for a DTE
rate of 115200, 8N1 and RTS/CTS flow control. An upload at 115200 bps will
take approximately 1 minute. Select 1K X-Modem as the file transfer protocol.
3. Disconnect the ISDN S0 Cable from the modem.
4. Check the modem for response by typing AT.
5. Initiate the download process using the AT**FLASH command. The following
messages appears upon issuing the AT**FLASH command.
Start your 1k-XMODEM transfer now (Ctrl-X aborts)..
6. Perform an 1k-XMODEM transfer of the firmware file (i.e. AL5068S V1.13.txt)
from the host computer to the modem RAM using an industry standard
communications software (ensure that all ASCII translation or pacing is turned
off).
7. After the firmware file has been loaded successfully it will start automatically after
a software reset and the following message appears:
OK
8. Check the new firmware version with ATI3.
9. Due to firmware changes and new functionalities the stored configuration in the
Eeprom may be lost. Therefore check the configuration before use.
Upload Problems:
Due to any errors it can be possible that no firmware is active after the upload
procedure. To restore the firmware correctly you have to re-enter the command
AT**FLASH and load the firmware as described above. The protected boot-loader
supports only the AT**FLASH command with a fixed baudrate of 115.200 Baud.
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