<![CDATA[pycom-fwtool-cli]]>I have downloaded and installed the newest 'pycom_firmware_update_1.12.0.b0.exe' on my Windows 10 64bit laptop. With this installation I also got 'pycom-fwtool-cli.exe'.
When after connecting my LoPy4 on its expansion board running the command 'pycom-fwtool-cli.exe list' I get:
COM4 [USB Serial Port (COM4)] [FTDIBUS\VID_0403+PID_6015+DO0038KYA\0000]

However all other commands, e.g.;

  • pycom-fwtool-cli.exe -p COM4 chip_id
  • pycom-fwtool-cli.exe -p COM4 wmac
  • pycom-fwtool-cli.exe -p COM4 write
  • pycom-fwtool-cli.exe -p COM4 nvs

All result in:
Running in FTDI mode
Exception: Failed to connect to ESP32: Invalid head of packet ('\xe4'), on line 397

What is going wrong?

]]>https://forum.pycom.io/topic/2795/pycom-fwtool-cliRSS for NodeWed, 20 May 2026 15:49:24 GMTThu, 08 Mar 2018 08:41:36 GMT60<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 08:41:36 GMT]]>I have downloaded and installed the newest 'pycom_firmware_update_1.12.0.b0.exe' on my Windows 10 64bit laptop. With this installation I also got 'pycom-fwtool-cli.exe'.
When after connecting my LoPy4 on its expansion board running the command 'pycom-fwtool-cli.exe list' I get:
COM4 [USB Serial Port (COM4)] [FTDIBUS\VID_0403+PID_6015+DO0038KYA\0000]

However all other commands, e.g.;

  • pycom-fwtool-cli.exe -p COM4 chip_id
  • pycom-fwtool-cli.exe -p COM4 wmac
  • pycom-fwtool-cli.exe -p COM4 write
  • pycom-fwtool-cli.exe -p COM4 nvs

All result in:
Running in FTDI mode
Exception: Failed to connect to ESP32: Invalid head of packet ('\xe4'), on line 397

What is going wrong?

]]>https://forum.pycom.io/post/16844https://forum.pycom.io/post/16844Thu, 08 Mar 2018 08:41:36 GMT<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 08:48:49 GMT]]>Have you put the module into bootloader mode? You need to connect a jumper cable between G23 and GND on the expansion board, then press the reset button on the Pycom module before running each command.

]]>https://forum.pycom.io/post/16845https://forum.pycom.io/post/16845Thu, 08 Mar 2018 08:48:49 GMT<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 08:59:15 GMT]]>Hi Seb,

Thanks for the (very) fast response!

Indeed that solved the problem. Looking again to the documentation (https://docs.pycom.io/chapter/advance/cli.html) this is stated, but I didn't notice it.

Tip for the developers: make this requirement more visable in the doc and/or let the tool give this remark as error response!

]]>https://forum.pycom.io/post/16848https://forum.pycom.io/post/16848Thu, 08 Mar 2018 08:59:15 GMT<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 09:18:12 GMT]]>I expected to have an option to copy a single to/from my pyCom board bud such a command seems not to be present, why is a copy command not provided?

]]>https://forum.pycom.io/post/16851https://forum.pycom.io/post/16851Thu, 08 Mar 2018 09:18:12 GMT<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 09:21:18 GMT]]>@lambert
Do you mean copying single script files? This tool is lower level than that so currently does not parse the FAT file system but I can pass on the suggestion to the team working on this tool.

In the meantime I can suggest tools like: mpfshell, rshell or ampy. These are command line tools with similar functionality to Pymakr and let you push and pull files via Serial

]]>https://forum.pycom.io/post/16853https://forum.pycom.io/post/16853Thu, 08 Mar 2018 09:21:18 GMT<![CDATA[Reply to pycom-fwtool-cli on Thu, 08 Mar 2018 09:52:00 GMT]]>@seb
Yes I meant copying single files.

I installed mpfshell and this can do the job for me. I did use an FTP toool for this, bud when using the WiFi radio in my app I constntly had to switch between IP addresses.

Thanks again.

]]>https://forum.pycom.io/post/16856https://forum.pycom.io/post/16856Thu, 08 Mar 2018 09:52:00 GMT