Thanks for the FileZilla config info Richard…and for confirming that it is probably a bug (and not just me going crazy!) I think I might just have to wait for the 1.21 release launch - when is that likely to be David?

Sorry - the last log had a password error which I fixed. This one lists the main SD directory but bangs out when I try to see inside /www/css. So previous questions in my last post still hold if anyone can please help….

Status: Resolving address of marcorexy
Status: Connecting to 10.1.1.20:21...
Status: Connection established, waiting for welcome message...
Status: Server does not support non-ASCII characters.
Status: Logged in
Status: Retrieving directory listing...
Status: Directory listing of "/" successful
Status: Retrieving directory listing of "/www/css"...
Command: CWD /www/css
Response: 250 Directory successfully changed.
Command: PWD
Response: 257 "/www/css"
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (10,1,1,20,100,58)
Command: LIST
Error: The data connection could not be established: ECONNREFUSED - Connection refused by server
Response: 425 Failed to establish connection.
Error: Failed to retrieve directory listing

Thanks, I loaded FileZilla. As advised above, I created an entry in Site Manager for the Duet, and set it to "Max concurrent connections: 1" and left the transfer mode set to "default". I'm still getting the kinds of errors as below.

What are the settings under the FileZilla general tab that I should be using? Port, protocol, encryption, logon type? And how do I define the FTP "user" name for the logon….do I need to add it into the Duet config.g file or do I just re-use the host name as the FTP user name or do I just leave it blank?

Is there a Duet wiki that I am missing that covers all this?

Status: Resolving address of marcorexy
Status: Connecting to 10.1.1.20:21...
Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Server does not support non-ASCII characters.
Status: Logged in
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/"
Command: TYPE I
Response: 200 Switching to Binary mode.
Command: PASV
Response: 227 Entering Passive Mode (10,1,1,20,117,27)
Command: LIST
Error: The data connection could not be established: ECONNREFUSED - Connection refused by server
Response: 425 Failed to establish connection.
Error: Failed to retrieve directory listing

What FTP clients are known to work with the Duet Wifi? I can't get WINSCP to work with the Duet Wifi. I'm running Duet Wifi firmware 1.20 and the latest Widows Device Driver files.

Thanks Dave and Danal. I followed your advice and it is all updated fine now, including 1.20 DWC.

You're right - I thought the FTP was working over the USB but it was actually working over Wifi.
What are the recommended FTP settings to get a smooth connection to the Duet SD card?

I've got the FTP "working" over USB with the latest Windows DuetDriver Version 1.9. I can see the directories and files on the SD card OK, but trying to do things like delete the /www files and directory is pretty erratic and keeps dropping the FTP connection. I am using the latest version of WINSCP for the FTP (no encryption), so far with mainly default communications settings. Please can someone help me with the recommended FTP settings to get a smooth connection to the Duet SD card.

Many thanks. I'm making progress…nearly there. I've got the Firmware and Wifi Server versions to 1.20 (as listed below). But I still can't manage the last step, which is to upgrade to DuetWebControl 1.20. I followed the instructions on https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware#Section_Updating_WiFi_firmware_or_DuetWebControl_files including the bit which says "you can rename it to e.g. DWC.zip and then it should upload" and the upload message said all the files uploaded OK (although I can't figure out how to see them through the web interface). However, I'm still stuck on Web Interface Version: 1.14a - it doesn't seem to automatically upgrade to the new files. Is there something I need to do to get this to happen?

Software Information
Firmware Name: RepRapFirmware for Duet WiFi
Firmware Electronics: Duet WiFi 1.0
Firmware Version: 1.20 (2017-12-23)
WiFi Server Version: 1.20
Web Interface Version: 1.14a
Web Interface by Christian Hammacher
Licensed under the terms of the GPL v2

It seems that the Duet Wifi doesn't support FTP as I'm getting these error messages on the Duet Web Interface screen - what am I doing wrong please? …

12:51:17 PM M586 P1 S1
Error: unsupported command: M586 P1 S1
12:50:10 PM M586
Error: unsupported command: M586

My Current Versions of Duet are:
Firmware Name: RepRapFirmware for Duet WiFi
Firmware Electronics: Duet WiFi 1.0
Firmware Version: 1.17e (2017-02-10)
WiFi Server Version: 1.03 (ch fork)
Web Interface Version: 1.14a

Thank you for this guidance Danal. I hadn't realised that "Duets are gcode driven for EVERYTHING"….including FTP.