R&D department
2018/08/01
Example of FTP update command:
password dfota ftp://test:test@demo.com:21/update/delta.bin
Modem firmware over the HTTP server
The structure of the command would be:
password dfota http://<http_server_URL>:<http_port>/<http_file_path>
<http_server_URL> - String type, the IP address or domain name of the HTTP server
<http_port> - Integer type, the port of the HTTP server. The default value is 80. The range is 1 – 65535
<http_file_path> - String type, the file name in HTTP server
Example of HTTP update command:
password dfota http://www.example.com:80/delta.bin
Note: total SMS message size with password, command name and link to file can be maximum 160 bytes long!
Responses to sent commands
After device receives dfota command it responds:
➢ When modem update was started successfully:
• Modem FW update process started. Check modem FW version with "modrev" command later
➢ When modem firmware update does not start because of bad SMS input:
• ERROR: DFOTA FW update NOT supported on this modem – when trying to update modem that is not 3G
• ERROR: link string too short – when minimum link requirements are not met
• ERROR: wrong command syntax – something wrong with command syntax
• ERROR: DFOTA FW update process already started – when update process was started previously
• ERROR: other reason – when there is another error not described above
After modem FW update is finished FM device responds (does not work on SMS via GPRS):
➢ Modem firmware updated successfully:
• Modem FW update process successful. Current modem version: xx
➢ Modem firmware update failed:
• Modem FW update process FAILED. Error code: xx
(error codes are specified in modem documentation)
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